"Python" String functions

1, str. Replace(word0,word1) # #用word1替换str中所有的word0

>>> ' Tea for too '. Replace (' too ', ' both ') output: ' Tea for both '

2, str. Lower() # #字符串str中的字母all converted to lowercase

STR. Upper() # #字符串str中的字母convert all to uppercase

Str. Capitalize() # #字符串str中的first letter converted to uppercase

>>> ' df Dfs ds '. Upper () ' DF Dfs ds ' >>> ' sdf SF omp dfs '. Lower () ' SDF SF omp dfs '
>>> ' df Dfs ds '. Capitalize ()
' Df DFS ds '

3. Str. Split(Sep) # # to divide str by Sep by default when Sep is sliced according to Whilespace (Space, tab, newline, return, FormFeed)

>>> ' df Dfs ds '. Split () [' DF ', ' Dfs ', ' ds ']>>> ' Df,dfs,ds '. Split (', ') [' DF ', ' Dfs ', ' DS ']

----< continued >---------

Using Regular expression to pass the distribution processing

>>> Import re
Re.findall (R ' \bf[a-z]* ', ' which foot or hand fell fastest ')
Output: [' foot ', ' fell ', ' fastest ']
re.sub (R ' (\b[a-z]+) \1 ', R ' \1 ', ' Cat in the The Hat ')
Output: ' Cat in the Hat '

"Python" String functions