英语单词 digit /ˈdɪdʒɪt/ n. 数字; (从 0 到 9 的任何一个)数位;
\d 匹配任意数字，等价于 [0-9]
xxxxxxxxxximport re txt: str = "你好123测试"pattern: str = r"\d\d\d" # 等价于 "[0-9]{3}" 或 "[0-9]+"results: list = re.search(pattern=pattern, string=txt)print(results) #<re.Match object; span=(2, 5), match='123'>
xxxxxxxxxx
import re
txt: str = "你好123测试"
pattern: str = r"\d\d\d" # 等价于 "[0-9]{3}" 或 "[0-9]+"
results: list = re.search(pattern=pattern, string=txt)
print(results) #<re.Match object; span=(2, 5), match='123'>
\D 匹配任意非数字，除了数字其它字符都可能匹配。
re.search(pattern,string)示例
xxxxxxxxxximport re txt: str = "你好123测试"pattern: str = r"\D+"results: list = re.search(pattern=pattern, string=txt)print(results) # <re.Match object; span=(0, 2), match='你好'>
pattern: str = r"\D+"
print(results) # <re.Match object; span=(0, 2), match='你好'>
re.findall(pattern,string)示例
xxxxxxxxxximport re txt: str = "你好123测试"pattern: str = r"\D+"results: list = re.findall(pattern=pattern, string=txt)print(results) # ['你好', '测试']
results: list = re.findall(pattern=pattern, string=txt)
print(results) # ['你好', '测试']
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\w
\s
\D
\W
\S
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[a-z]
[^abc]
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