chore: add StyledStr::destyle

crates/erg_common/style.rs

@@ -162,6 +162,20 @@ impl Color {
             Color::White => WHITE,
         }
     }
+
+    pub fn decolor(colored: &str) -> &str {
+        colored
+            .trim_end_matches(RESET)
+            .trim_start_matches(BLACK)
+            .trim_start_matches(BLUE)
+            .trim_start_matches(CYAN)
+            .trim_start_matches(GRAY)
+            .trim_start_matches(GREEN)
+            .trim_start_matches(MAGENTA)
+            .trim_start_matches(RED)
+            .trim_start_matches(YELLOW)
+            .trim_start_matches(WHITE)
+    }
 }
 
 #[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Hash)]
@@ -181,6 +195,14 @@ impl Attribute {
             Attribute::Reversed => REVERSED,
         }
     }
+
+    pub fn deattr(attributed: &str) -> &str {
+        attributed
+            .trim_end_matches(ATTR_RESET)
+            .trim_start_matches(UNDERLINE)
+            .trim_start_matches(BOLD)
+            .trim_start_matches(REVERSED)
+    }
 }
 
 #[derive(Debug, Clone, PartialEq, Eq, Hash)]
@@ -347,6 +369,10 @@ impl<'a> StyledStr<'a> {
             attribute,
         }
     }
+
+    pub fn destyle(styled: &str) -> &str {
+        Attribute::deattr(Color::decolor(styled))
+    }
 }
 
 impl std::fmt::Display for StyledStr<'_> {

crates/erg_compiler/lib/pystd/zoneinfo.d.er

@@ -1,9 +1,18 @@
-.available_zones: Set Str, _
+.available_timezones: () -> Set(Str, _)
+.reset_tzpath!: (to := Sequence(Str) or PathLike) => NoneType
 .TZPATH: [Str; _]
 
+.ZoneInfoNotFoundError: ClassType
+.ZoneInfoNotFoundError <: Exception
+
+.InvalidTZPathWarning: ClassType
+.InvalidTZPathWarning <: Warning
+
 .ZoneInfo: ClassType
 .ZoneInfo.
     key: Str
     __call__: (key: Str) -> .ZoneInfo
     from_file: (fobj: FileLike, key := Str) -> .ZoneInfo
+    no_cache: (key: Str) -> .ZoneInfo
+    clear_cache!: () => NoneType
     __str__: (self: .ZoneInfo) -> Str