23 lines
744 B
Python
23 lines
744 B
Python
import re
|
||
|
||
# 正则表达式：匹配任意字符（.）；零次或多次（*）；尽可能少地匹配（?）
|
||
|
||
# re.match 指匹配起始位置的模式，如果起始位置不匹配的话，返回 None
|
||
string = 'this_is_a_test_abc_123'
|
||
result = re.match(pattern='ab(.*?)23', string=string)
|
||
print(result)
|
||
print()
|
||
result = re.match(pattern='this(.*?)abc', string=string)
|
||
print(result.group(0))
|
||
print(result.group(1))
|
||
print()
|
||
|
||
# re.search 扫描整个字符串并返回第一个成功的匹配。
|
||
string = 'this_is_a_test_abc_123'
|
||
result = re.search(pattern='ab(.*?)23', string=string)
|
||
print(result.group(0))
|
||
print(result.group(1))
|
||
print()
|
||
result = re.search(pattern='this(.*?)abc', string=string)
|
||
print(result.group(0))
|
||
print(result.group(1)) |