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[ruff] Auto-add r prefix when string has no backslashes for unraw-re-pattern (RUF039) (#14536)
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This PR adds a sometimes-available, safe autofix for [unraw-re-pattern (RUF039)](https://docs.astral.sh/ruff/rules/unraw-re-pattern/#unraw-re-pattern-ruf039), which prepends an `r` prefix. It is used only when the string in question has no backslahses (and also does not have a `u` prefix, since that causes a syntax error.) Closes #14527 Notes: - Test fixture unchanged, but snapshot changed to include fix messages. - This fix is automatically only available in preview since the rule itself is in preview
This commit is contained in:
Dylan
GitHub
parent
931fa06d85
commit
3fda2d17c7
3 changed files with 294 additions and 29 deletions
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@ -1,13 +1,15 @@
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use std::fmt::{Display, Formatter};
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use std::str::FromStr;
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use ruff_diagnostics::{Diagnostic, Violation};
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use ruff_diagnostics::{Diagnostic, Edit, Fix, FixAvailability, Violation};
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use ruff_macros::{derive_message_formats, violation};
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use ruff_python_ast::{
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BytesLiteral, Expr, ExprBytesLiteral, ExprCall, ExprStringLiteral, StringLiteral,
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};
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use ruff_python_semantic::{Modules, SemanticModel};
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use ruff_text_size::Ranged;
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use crate::checkers::ast::Checker;
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/// ## What it does
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@ -41,6 +43,7 @@ pub struct UnrawRePattern {
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}
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impl Violation for UnrawRePattern {
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const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
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#[derive_message_formats]
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fn message(&self) -> String {
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let Self { module, func, kind } = &self;
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@ -158,8 +161,22 @@ fn check_string(checker: &mut Checker, literal: &StringLiteral, module: RegexMod
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let kind = PatternKind::String;
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let func = func.to_string();
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let range = literal.range;
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let diagnostic = Diagnostic::new(UnrawRePattern { module, func, kind }, range);
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let mut diagnostic = Diagnostic::new(UnrawRePattern { module, func, kind }, range);
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if
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// The (no-op) `u` prefix is a syntax error when combined with `r`
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!literal.flags.prefix().is_unicode()
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// We are looking for backslash characters
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// in the raw source code here, because `\n`
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// gets converted to a single character already
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// at the lexing stage.
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&&!checker.locator().slice(literal.range()).contains('\\')
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{
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diagnostic.set_fix(Fix::safe_edit(Edit::insertion(
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"r".to_string(),
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literal.range().start(),
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)));
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}
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checker.diagnostics.push(diagnostic);
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}
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@ -1,8 +1,7 @@
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---
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source: crates/ruff_linter/src/rules/ruff/mod.rs
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snapshot_kind: text
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---
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RUF039.py:5:12: RUF039 First argument to `re.compile()` is not raw string
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RUF039.py:5:12: RUF039 [*] First argument to `re.compile()` is not raw string
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4 | # Errors
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5 | re.compile('single free-spacing', flags=re.X)
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@ -12,6 +11,16 @@ RUF039.py:5:12: RUF039 First argument to `re.compile()` is not raw string
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= help: Replace with raw string
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ℹ Safe fix
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2 2 | import regex
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3 3 |
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4 4 | # Errors
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5 |-re.compile('single free-spacing', flags=re.X)
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5 |+re.compile(r'single free-spacing', flags=re.X)
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6 6 | re.findall('si\ngle')
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7 7 | re.finditer("dou\ble")
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8 8 | re.fullmatch('''t\riple single''')
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RUF039.py:6:12: RUF039 First argument to `re.findall()` is not raw string
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4 | # Errors
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@ -56,7 +65,7 @@ RUF039.py:9:10: RUF039 First argument to `re.match()` is not raw string
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= help: Replace with raw string
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RUF039.py:10:11: RUF039 First argument to `re.search()` is not raw string
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RUF039.py:10:11: RUF039 [*] First argument to `re.search()` is not raw string
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8 | re.fullmatch('''t\riple single''')
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9 | re.match("""\triple double""")
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@ -67,7 +76,17 @@ RUF039.py:10:11: RUF039 First argument to `re.search()` is not raw string
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= help: Replace with raw string
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RUF039.py:11:10: RUF039 First argument to `re.split()` is not raw string
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ℹ Safe fix
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7 7 | re.finditer("dou\ble")
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8 8 | re.fullmatch('''t\riple single''')
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9 9 | re.match("""\triple double""")
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10 |-re.search('two', 'args')
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10 |+re.search(r'two', 'args')
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11 11 | re.split("raw", r'second')
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12 12 | re.sub(u'''nicode''', u"f(?i)rst")
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13 13 | re.subn(b"""ytes are""", f"\u006e")
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RUF039.py:11:10: RUF039 [*] First argument to `re.split()` is not raw string
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9 | re.match("""\triple double""")
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10 | re.search('two', 'args')
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@ -78,6 +97,16 @@ RUF039.py:11:10: RUF039 First argument to `re.split()` is not raw string
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= help: Replace with raw string
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ℹ Safe fix
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8 8 | re.fullmatch('''t\riple single''')
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9 9 | re.match("""\triple double""")
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10 10 | re.search('two', 'args')
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11 |-re.split("raw", r'second')
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11 |+re.split(r"raw", r'second')
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12 12 | re.sub(u'''nicode''', u"f(?i)rst")
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13 13 | re.subn(b"""ytes are""", f"\u006e")
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14 14 |
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RUF039.py:12:8: RUF039 First argument to `re.sub()` is not raw string
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10 | re.search('two', 'args')
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@ -99,7 +128,7 @@ RUF039.py:13:9: RUF039 First argument to `re.subn()` is not raw bytes literal
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= help: Replace with raw bytes literal
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RUF039.py:15:15: RUF039 First argument to `regex.compile()` is not raw string
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RUF039.py:15:15: RUF039 [*] First argument to `regex.compile()` is not raw string
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13 | re.subn(b"""ytes are""", f"\u006e")
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14 |
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@ -110,6 +139,16 @@ RUF039.py:15:15: RUF039 First argument to `regex.compile()` is not raw string
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= help: Replace with raw string
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ℹ Safe fix
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12 12 | re.sub(u'''nicode''', u"f(?i)rst")
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13 13 | re.subn(b"""ytes are""", f"\u006e")
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14 14 |
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15 |-regex.compile('single free-spacing', flags=regex.X)
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15 |+regex.compile(r'single free-spacing', flags=regex.X)
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16 16 | regex.findall('si\ngle')
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17 17 | regex.finditer("dou\ble")
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18 18 | regex.fullmatch('''t\riple single''')
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RUF039.py:16:15: RUF039 First argument to `regex.findall()` is not raw string
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15 | regex.compile('single free-spacing', flags=regex.X)
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@ -153,7 +192,7 @@ RUF039.py:19:13: RUF039 First argument to `regex.match()` is not raw string
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= help: Replace with raw string
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RUF039.py:20:14: RUF039 First argument to `regex.search()` is not raw string
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RUF039.py:20:14: RUF039 [*] First argument to `regex.search()` is not raw string
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18 | regex.fullmatch('''t\riple single''')
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19 | regex.match("""\triple double""")
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@ -164,7 +203,17 @@ RUF039.py:20:14: RUF039 First argument to `regex.search()` is not raw string
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= help: Replace with raw string
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RUF039.py:21:13: RUF039 First argument to `regex.split()` is not raw string
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ℹ Safe fix
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17 17 | regex.finditer("dou\ble")
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18 18 | regex.fullmatch('''t\riple single''')
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19 19 | regex.match("""\triple double""")
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20 |-regex.search('two', 'args')
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20 |+regex.search(r'two', 'args')
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21 21 | regex.split("raw", r'second')
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22 22 | regex.sub(u'''nicode''', u"f(?i)rst")
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23 23 | regex.subn(b"""ytes are""", f"\u006e")
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RUF039.py:21:13: RUF039 [*] First argument to `regex.split()` is not raw string
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19 | regex.match("""\triple double""")
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20 | regex.search('two', 'args')
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@ -175,6 +224,16 @@ RUF039.py:21:13: RUF039 First argument to `regex.split()` is not raw string
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= help: Replace with raw string
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ℹ Safe fix
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18 18 | regex.fullmatch('''t\riple single''')
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19 19 | regex.match("""\triple double""")
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20 20 | regex.search('two', 'args')
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21 |-regex.split("raw", r'second')
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21 |+regex.split(r"raw", r'second')
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22 22 | regex.sub(u'''nicode''', u"f(?i)rst")
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23 23 | regex.subn(b"""ytes are""", f"\u006e")
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24 24 |
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RUF039.py:22:11: RUF039 First argument to `regex.sub()` is not raw string
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20 | regex.search('two', 'args')
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@ -196,7 +255,7 @@ RUF039.py:23:12: RUF039 First argument to `regex.subn()` is not raw bytes litera
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= help: Replace with raw bytes literal
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RUF039.py:25:16: RUF039 First argument to `regex.template()` is not raw string
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RUF039.py:25:16: RUF039 [*] First argument to `regex.template()` is not raw string
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23 | regex.subn(b"""ytes are""", f"\u006e")
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24 |
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@ -209,3 +268,13 @@ RUF039.py:25:16: RUF039 First argument to `regex.template()` is not raw string
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| |___^ RUF039
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= help: Replace with raw string
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ℹ Safe fix
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22 22 | regex.sub(u'''nicode''', u"f(?i)rst")
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23 23 | regex.subn(b"""ytes are""", f"\u006e")
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24 24 |
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25 |-regex.template("""(?m)
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25 |+regex.template(r"""(?m)
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26 26 | (?:ulti)?
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27 27 | (?=(?<!(?<=(?!l)))
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28 28 | l(?i:ne)
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@ -1,8 +1,7 @@
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---
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source: crates/ruff_linter/src/rules/ruff/mod.rs
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snapshot_kind: text
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---
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RUF039_concat.py:5:5: RUF039 First argument to `re.compile()` is not raw string
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RUF039_concat.py:5:5: RUF039 [*] First argument to `re.compile()` is not raw string
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4 | re.compile(
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5 | 'implicit'
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@ -12,7 +11,17 @@ RUF039_concat.py:5:5: RUF039 First argument to `re.compile()` is not raw string
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= help: Replace with raw string
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RUF039_concat.py:6:5: RUF039 First argument to `re.compile()` is not raw string
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ℹ Safe fix
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2 2 |
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3 3 |
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4 4 | re.compile(
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5 |- 'implicit'
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5 |+ r'implicit'
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6 6 | 'concatenation'
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7 7 | )
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8 8 | re.findall(
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RUF039_concat.py:6:5: RUF039 [*] First argument to `re.compile()` is not raw string
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4 | re.compile(
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5 | 'implicit'
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= help: Replace with raw string
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RUF039_concat.py:12:5: RUF039 First argument to `re.findall()` is not raw string
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ℹ Safe fix
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3 3 |
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4 4 | re.compile(
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5 5 | 'implicit'
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6 |- 'concatenation'
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6 |+ r'concatenation'
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7 7 | )
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8 8 | re.findall(
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9 9 | r'''
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RUF039_concat.py:12:5: RUF039 [*] First argument to `re.findall()` is not raw string
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10 | multiline
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11 | '''
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= help: Replace with raw string
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ℹ Safe fix
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9 9 | r'''
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10 10 | multiline
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11 11 | '''
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12 |- """
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12 |+ r"""
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13 13 | concatenation
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14 14 | """
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15 15 | )
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RUF039_concat.py:26:5: RUF039 First argument to `re.match()` is not raw bytes literal
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24 | )
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@ -59,7 +88,7 @@ RUF039_concat.py:30:8: RUF039 First argument to `re.search()` is not raw string
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= help: Replace with raw string
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RUF039_concat.py:31:5: RUF039 First argument to `re.search()` is not raw string
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RUF039_concat.py:31:5: RUF039 [*] First argument to `re.search()` is not raw string
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29 | re.search(
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30 | r''u''
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= help: Replace with raw string
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RUF039_concat.py:33:10: RUF039 First argument to `re.split()` is not raw string
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ℹ Safe fix
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28 28 | )
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29 29 | re.search(
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30 30 | r''u''
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31 |- '''okay?'''
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31 |+ r'''okay?'''
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32 32 | )
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33 33 | re.split(''U"""w"""U'')
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34 34 | re.sub(
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RUF039_concat.py:33:10: RUF039 [*] First argument to `re.split()` is not raw string
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31 | '''okay?'''
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32 | )
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= help: Replace with raw string
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ℹ Safe fix
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30 30 | r''u''
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31 31 | '''okay?'''
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32 32 | )
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33 |-re.split(''U"""w"""U'')
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33 |+re.split(r''U"""w"""U'')
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34 34 | re.sub(
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35 35 | "I''m o"
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36 36 | 'utta ideas'
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RUF039_concat.py:33:12: RUF039 First argument to `re.split()` is not raw string
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31 | '''okay?'''
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@ -103,7 +152,7 @@ RUF039_concat.py:33:20: RUF039 First argument to `re.split()` is not raw string
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= help: Replace with raw string
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RUF039_concat.py:35:5: RUF039 First argument to `re.sub()` is not raw string
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RUF039_concat.py:35:5: RUF039 [*] First argument to `re.sub()` is not raw string
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33 | re.split(''U"""w"""U'')
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34 | re.sub(
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@ -114,7 +163,17 @@ RUF039_concat.py:35:5: RUF039 First argument to `re.sub()` is not raw string
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= help: Replace with raw string
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RUF039_concat.py:36:5: RUF039 First argument to `re.sub()` is not raw string
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ℹ Safe fix
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32 32 | )
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33 33 | re.split(''U"""w"""U'')
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34 34 | re.sub(
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35 |- "I''m o"
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35 |+ r"I''m o"
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36 36 | 'utta ideas'
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37 37 | )
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38 38 | re.subn("()"r' am I'"??")
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RUF039_concat.py:36:5: RUF039 [*] First argument to `re.sub()` is not raw string
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34 | re.sub(
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35 | "I''m o"
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@ -125,7 +184,17 @@ RUF039_concat.py:36:5: RUF039 First argument to `re.sub()` is not raw string
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= help: Replace with raw string
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RUF039_concat.py:38:9: RUF039 First argument to `re.subn()` is not raw string
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ℹ Safe fix
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33 33 | re.split(''U"""w"""U'')
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34 34 | re.sub(
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35 35 | "I''m o"
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36 |- 'utta ideas'
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36 |+ r'utta ideas'
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37 37 | )
|
||||
38 38 | re.subn("()"r' am I'"??")
|
||||
39 39 |
|
||||
|
||||
RUF039_concat.py:38:9: RUF039 [*] First argument to `re.subn()` is not raw string
|
||||
|
|
||||
36 | 'utta ideas'
|
||||
37 | )
|
||||
|
|
@ -134,7 +203,17 @@ RUF039_concat.py:38:9: RUF039 First argument to `re.subn()` is not raw string
|
|||
|
|
||||
= help: Replace with raw string
|
||||
|
||||
RUF039_concat.py:38:21: RUF039 First argument to `re.subn()` is not raw string
|
||||
ℹ Safe fix
|
||||
35 35 | "I''m o"
|
||||
36 36 | 'utta ideas'
|
||||
37 37 | )
|
||||
38 |-re.subn("()"r' am I'"??")
|
||||
38 |+re.subn(r"()"r' am I'"??")
|
||||
39 39 |
|
||||
40 40 |
|
||||
41 41 | import regex
|
||||
|
||||
RUF039_concat.py:38:21: RUF039 [*] First argument to `re.subn()` is not raw string
|
||||
|
|
||||
36 | 'utta ideas'
|
||||
37 | )
|
||||
|
|
@ -143,7 +222,17 @@ RUF039_concat.py:38:21: RUF039 First argument to `re.subn()` is not raw string
|
|||
|
|
||||
= help: Replace with raw string
|
||||
|
||||
RUF039_concat.py:45:5: RUF039 First argument to `regex.compile()` is not raw string
|
||||
ℹ Safe fix
|
||||
35 35 | "I''m o"
|
||||
36 36 | 'utta ideas'
|
||||
37 37 | )
|
||||
38 |-re.subn("()"r' am I'"??")
|
||||
38 |+re.subn("()"r' am I'r"??")
|
||||
39 39 |
|
||||
40 40 |
|
||||
41 41 | import regex
|
||||
|
||||
RUF039_concat.py:45:5: RUF039 [*] First argument to `regex.compile()` is not raw string
|
||||
|
|
||||
44 | regex.compile(
|
||||
45 | 'implicit'
|
||||
|
|
@ -153,7 +242,17 @@ RUF039_concat.py:45:5: RUF039 First argument to `regex.compile()` is not raw str
|
|||
|
|
||||
= help: Replace with raw string
|
||||
|
||||
RUF039_concat.py:46:5: RUF039 First argument to `regex.compile()` is not raw string
|
||||
ℹ Safe fix
|
||||
42 42 |
|
||||
43 43 |
|
||||
44 44 | regex.compile(
|
||||
45 |- 'implicit'
|
||||
45 |+ r'implicit'
|
||||
46 46 | 'concatenation'
|
||||
47 47 | )
|
||||
48 48 | regex.findall(
|
||||
|
||||
RUF039_concat.py:46:5: RUF039 [*] First argument to `regex.compile()` is not raw string
|
||||
|
|
||||
44 | regex.compile(
|
||||
45 | 'implicit'
|
||||
|
|
@ -164,7 +263,17 @@ RUF039_concat.py:46:5: RUF039 First argument to `regex.compile()` is not raw str
|
|||
|
|
||||
= help: Replace with raw string
|
||||
|
||||
RUF039_concat.py:52:5: RUF039 First argument to `regex.findall()` is not raw string
|
||||
ℹ Safe fix
|
||||
43 43 |
|
||||
44 44 | regex.compile(
|
||||
45 45 | 'implicit'
|
||||
46 |- 'concatenation'
|
||||
46 |+ r'concatenation'
|
||||
47 47 | )
|
||||
48 48 | regex.findall(
|
||||
49 49 | r'''
|
||||
|
||||
RUF039_concat.py:52:5: RUF039 [*] First argument to `regex.findall()` is not raw string
|
||||
|
|
||||
50 | multiline
|
||||
51 | '''
|
||||
|
|
@ -178,6 +287,16 @@ RUF039_concat.py:52:5: RUF039 First argument to `regex.findall()` is not raw str
|
|||
|
|
||||
= help: Replace with raw string
|
||||
|
||||
ℹ Safe fix
|
||||
49 49 | r'''
|
||||
50 50 | multiline
|
||||
51 51 | '''
|
||||
52 |- """
|
||||
52 |+ r"""
|
||||
53 53 | concatenation
|
||||
54 54 | """
|
||||
55 55 | )
|
||||
|
||||
RUF039_concat.py:66:5: RUF039 First argument to `regex.match()` is not raw bytes literal
|
||||
|
|
||||
64 | )
|
||||
|
|
@ -200,7 +319,7 @@ RUF039_concat.py:70:8: RUF039 First argument to `regex.search()` is not raw stri
|
|||
|
|
||||
= help: Replace with raw string
|
||||
|
||||
RUF039_concat.py:71:5: RUF039 First argument to `regex.search()` is not raw string
|
||||
RUF039_concat.py:71:5: RUF039 [*] First argument to `regex.search()` is not raw string
|
||||
|
|
||||
69 | regex.search(
|
||||
70 | r''u''
|
||||
|
|
@ -211,7 +330,17 @@ RUF039_concat.py:71:5: RUF039 First argument to `regex.search()` is not raw stri
|
|||
|
|
||||
= help: Replace with raw string
|
||||
|
||||
RUF039_concat.py:73:13: RUF039 First argument to `regex.split()` is not raw string
|
||||
ℹ Safe fix
|
||||
68 68 | )
|
||||
69 69 | regex.search(
|
||||
70 70 | r''u''
|
||||
71 |- '''okay?'''
|
||||
71 |+ r'''okay?'''
|
||||
72 72 | )
|
||||
73 73 | regex.split(''U"""w"""U'')
|
||||
74 74 | regex.sub(
|
||||
|
||||
RUF039_concat.py:73:13: RUF039 [*] First argument to `regex.split()` is not raw string
|
||||
|
|
||||
71 | '''okay?'''
|
||||
72 | )
|
||||
|
|
@ -222,6 +351,16 @@ RUF039_concat.py:73:13: RUF039 First argument to `regex.split()` is not raw stri
|
|||
|
|
||||
= help: Replace with raw string
|
||||
|
||||
ℹ Safe fix
|
||||
70 70 | r''u''
|
||||
71 71 | '''okay?'''
|
||||
72 72 | )
|
||||
73 |-regex.split(''U"""w"""U'')
|
||||
73 |+regex.split(r''U"""w"""U'')
|
||||
74 74 | regex.sub(
|
||||
75 75 | "I''m o"
|
||||
76 76 | 'utta ideas'
|
||||
|
||||
RUF039_concat.py:73:15: RUF039 First argument to `regex.split()` is not raw string
|
||||
|
|
||||
71 | '''okay?'''
|
||||
|
|
@ -244,7 +383,7 @@ RUF039_concat.py:73:23: RUF039 First argument to `regex.split()` is not raw stri
|
|||
|
|
||||
= help: Replace with raw string
|
||||
|
||||
RUF039_concat.py:75:5: RUF039 First argument to `regex.sub()` is not raw string
|
||||
RUF039_concat.py:75:5: RUF039 [*] First argument to `regex.sub()` is not raw string
|
||||
|
|
||||
73 | regex.split(''U"""w"""U'')
|
||||
74 | regex.sub(
|
||||
|
|
@ -255,7 +394,17 @@ RUF039_concat.py:75:5: RUF039 First argument to `regex.sub()` is not raw string
|
|||
|
|
||||
= help: Replace with raw string
|
||||
|
||||
RUF039_concat.py:76:5: RUF039 First argument to `regex.sub()` is not raw string
|
||||
ℹ Safe fix
|
||||
72 72 | )
|
||||
73 73 | regex.split(''U"""w"""U'')
|
||||
74 74 | regex.sub(
|
||||
75 |- "I''m o"
|
||||
75 |+ r"I''m o"
|
||||
76 76 | 'utta ideas'
|
||||
77 77 | )
|
||||
78 78 | regex.subn("()"r' am I'"??")
|
||||
|
||||
RUF039_concat.py:76:5: RUF039 [*] First argument to `regex.sub()` is not raw string
|
||||
|
|
||||
74 | regex.sub(
|
||||
75 | "I''m o"
|
||||
|
|
@ -266,7 +415,17 @@ RUF039_concat.py:76:5: RUF039 First argument to `regex.sub()` is not raw string
|
|||
|
|
||||
= help: Replace with raw string
|
||||
|
||||
RUF039_concat.py:78:12: RUF039 First argument to `regex.subn()` is not raw string
|
||||
ℹ Safe fix
|
||||
73 73 | regex.split(''U"""w"""U'')
|
||||
74 74 | regex.sub(
|
||||
75 75 | "I''m o"
|
||||
76 |- 'utta ideas'
|
||||
76 |+ r'utta ideas'
|
||||
77 77 | )
|
||||
78 78 | regex.subn("()"r' am I'"??")
|
||||
79 79 |
|
||||
|
||||
RUF039_concat.py:78:12: RUF039 [*] First argument to `regex.subn()` is not raw string
|
||||
|
|
||||
76 | 'utta ideas'
|
||||
77 | )
|
||||
|
|
@ -275,7 +434,17 @@ RUF039_concat.py:78:12: RUF039 First argument to `regex.subn()` is not raw strin
|
|||
|
|
||||
= help: Replace with raw string
|
||||
|
||||
RUF039_concat.py:78:24: RUF039 First argument to `regex.subn()` is not raw string
|
||||
ℹ Safe fix
|
||||
75 75 | "I''m o"
|
||||
76 76 | 'utta ideas'
|
||||
77 77 | )
|
||||
78 |-regex.subn("()"r' am I'"??")
|
||||
78 |+regex.subn(r"()"r' am I'"??")
|
||||
79 79 |
|
||||
80 80 |
|
||||
81 81 | regex.template(
|
||||
|
||||
RUF039_concat.py:78:24: RUF039 [*] First argument to `regex.subn()` is not raw string
|
||||
|
|
||||
76 | 'utta ideas'
|
||||
77 | )
|
||||
|
|
@ -283,3 +452,13 @@ RUF039_concat.py:78:24: RUF039 First argument to `regex.subn()` is not raw strin
|
|||
| ^^^^ RUF039
|
||||
|
|
||||
= help: Replace with raw string
|
||||
|
||||
ℹ Safe fix
|
||||
75 75 | "I''m o"
|
||||
76 76 | 'utta ideas'
|
||||
77 77 | )
|
||||
78 |-regex.subn("()"r' am I'"??")
|
||||
78 |+regex.subn("()"r' am I'r"??")
|
||||
79 79 |
|
||||
80 80 |
|
||||
81 81 | regex.template(
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue