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Issue #28637: No longer use re in site.py.

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This makes Python startup from a virtual environment a little faster.
This commit is contained in:
Serhiy Storchaka 2016-11-08 20:18:20 +02:00
commit b5c349d5ae
1 changed files with 4 additions and 9 deletions
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13
Lib/site.py
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@ -422,8 +422,6 @@ def enablerlcompleter():
sys.__interactivehook__ = register_readline sys.__interactivehook__ = register_readline
CONFIG_LINE = r'^(?P<key>(\w|[-_])+)\s*=\s*(?P<value>.*)\s*$'
def venv(known_paths): def venv(known_paths):
global PREFIXES, ENABLE_USER_SITE global PREFIXES, ENABLE_USER_SITE
@ -445,19 +443,16 @@ def venv(known_paths):
] ]
if candidate_confs: if candidate_confs:
import re
config_line = re.compile(CONFIG_LINE)
virtual_conf = candidate_confs[0] virtual_conf = candidate_confs[0]
system_site = "true" system_site = "true"
# Issue 25185: Use UTF-8, as that's what the venv module uses when # Issue 25185: Use UTF-8, as that's what the venv module uses when
# writing the file. # writing the file.
with open(virtual_conf, encoding='utf-8') as f: with open(virtual_conf, encoding='utf-8') as f:
for line in f: for line in f:
line = line.strip() if '=' in line:
m = config_line.match(line) key, _, value = line.partition('=')
if m: key = key.strip().lower()
d = m.groupdict() value = value.strip()
key, value = d['key'].lower(), d['value']
if key == 'include-system-site-packages': if key == 'include-system-site-packages':
system_site = value.lower() system_site = value.lower()
elif key == 'home': elif key == 'home':