mars.dataframe.Series.str.slice_replace#
- Series.str.slice_replace(start=None, stop=None, repl=None)#
Replace a positional slice of a string with another value.
- 参数
start (int, optional) – Left index position to use for the slice. If not specified (None), the slice is unbounded on the left, i.e. slice from the start of the string.
stop (int, optional) – Right index position to use for the slice. If not specified (None), the slice is unbounded on the right, i.e. slice until the end of the string.
repl (str, optional) – String for replacement. If not specified (None), the sliced region is replaced with an empty string.
- 返回
Same type as the original object.
- 返回类型
参见
Series.str.slice
Just slicing without replacement.
实际案例
>>> import mars.dataframe as md >>> s = md.Series(['a', 'ab', 'abc', 'abdc', 'abcde']) >>> s.execute() 0 a 1 ab 2 abc 3 abdc 4 abcde dtype: object
Specify just start, meaning replace start until the end of the string with repl.
>>> s.str.slice_replace(1, repl='X').execute() 0 aX 1 aX 2 aX 3 aX 4 aX dtype: object
Specify just stop, meaning the start of the string to stop is replaced with repl, and the rest of the string is included.
>>> s.str.slice_replace(stop=2, repl='X').execute() 0 X 1 X 2 Xc 3 Xdc 4 Xcde dtype: object
Specify start and stop, meaning the slice from start to stop is replaced with repl. Everything before or after start and stop is included as is.
>>> s.str.slice_replace(start=1, stop=3, repl='X').execute() 0 aX 1 aX 2 aX 3 aXc 4 aXde dtype: object