在Python中,使用正则表达式需要使用re模块。以下是使用正则表达式的一些常见场景和示例。
import re
result = re.search(r'\d+ ', '这是123456的内容')
if result:
print('找到数字:', result.group())
else:
print('未找到数字')
import re
pattern = r'^\w+ \w\s*$/'
if re.match(pattern, 'hello@world'):
print('格式正确')
else:
print('格式错误')
import re
pattern = r'(?P<name>\w+) (\w+)'
results = re.finditer(pattern, '姓名:张三,年龄:30,职业:工程师')
for result in results:
print(result.group(0), result.group(1), result.group(2))
import re
pattern = r'(?P<name>\w+) (\w+)'
results = re.finditer(pattern, '姓名:张三,年龄:30,职业:工程师')
for result in results:
name = result.group(1)
age = result.group(2)
print(f'姓名: {name}, 年龄: {age}')
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