Python3中字符串中的数字提取方法

Python3中字符串中的数字提取方法

• re.sub(pattern, repl, string, count=0, flags=0)

1 totalCount = '100abc'
2 totalCount = re.sub("\D", "", totalCount)

• str.split(sep=None, maxsplit=-1)

>>> import string
>>> a = "32 个答案"
>>> b = a.split()[0]
>>> print(b)
>>> type(b)

>>> c = '1,2,3'
>>> c.split(',')
['1', '2', '3']
>>> c.split(',')[0]
'1'
>>> c.split(',')[1]
'2'
>>>

split()的第一个参数是分隔符，如果什么都不填就是默认是以空格来分隔

转载于:https://www.cnblogs.com/TianchiLiu/p/9866188.html