python清除字符串中间空格的实例讲解

>>> a = 'hello world'
>>> a.replace(' ', '')
'helloworld'

>>> a = ''.join(a.split())
>>> print(a)
helloworld

>>> import re
>>> strinfo = re.compile()
>>> strinfo = re.compile(' ')
>>> b = strinfo.sub('', a)
>>> print(b)
helloworld