Over write last N characters of string in python

Asked May 18 '18 at 16:17

Active May 18 '18 at 16:17

Viewed 41 times

I am trying to find a smart way to pad a variable length string.

I grab the length of a text chunk, set up my fixed length string and index it like so:

    text = 'string'
    pad_seq_len = 10
    text_len = len(text)
    padded_text = '_'*pad_seq_len
    print(padded_text)
    padded_text[(pad_seq_len-text_len):pad_seq_len]
    print(padded_text)

Output:

'__________'
'_____string'

Is there a shorter way to do this using negative indexing? I could try:

    padded_text[-1:-pad_seq_len]

but I was wondering if there was an even better way...

asked May 18 '18 at 16:17

Sledge

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What's wrong about `'_' * (pad_seq_len - len(text)) + text`? – jdehesa May 18 '18 at 16:19
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Check out [`rjust`](https://docs.python.org/3/library/stdtypes.html#str.rjust). – mkrieger1 May 18 '18 at 16:23
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I think you want `'{0:_>{1}}'.format(text,pad_seq_len)` – Jean-François Fabre May 18 '18 at 16:23
Try `(padded_text+text)[-pad_seq_len:]` – Khauri May 18 '18 at 16:24
@mkrieger1 I think that's the simplest way to do it. – Sledge May 18 '18 at 18:47

Over write last N characters of string in python

0 Answers0