How to Fill Out a Python String With Spaces

How can I fill out a Python string with spaces?

You can do this with str.ljust(width[, fillchar]):

Return the string left justified in a string of length width. Padding is done using the specified fillchar (default is a space). The original string is returned if width is less than len(s).

>>> 'hi'.ljust(10)
'hi        '

How to pad a string to a fixed length with spaces in Python?

This is super simple with format:

>>> a = "John"
>>> "{:<15}".format(a)
'John           '

Python - How can I pad a string with spaces from the right and left?

You can look into str.ljust and str.rjust I believe.

The alternative is probably to use the format method:

>>> '{:<30}'.format('left aligned')
'left aligned                  '
>>> '{:>30}'.format('right aligned')
'                 right aligned'
>>> '{:^30}'.format('centered')
'           centered           '
>>> '{:*^30}'.format('centered')  # use '*' as a fill char
'***********centered***********'

How do I convert a list into a string with spaces in Python?

" ".join(my_list)

You need to join with a space, not an empty string.

how to search a string with spaces within another string in python?

You can also use a regex approach like this:

import re

Glist={'masked 111', 'DATA',"My Add no" , 'MASKEDDATA',}
glst_rx = r"\b(?:{})\b".format("|".join(Glist))

def garbagefin(x):
    if re.search(glst_rx, x, re.I):
        return ''
    else:
        return x

See the Python demo.

The glst_rx = r"\b(?:{})\b".format("|".join(Glist)) code will generate the \b(?:My Add no|DATA|MASKEDDATA|masked 111)\b regex (see the online demo).

It will match the strings from Glist in a case insensitive way (note the re.I flag in re.search(glst_rx, x, re.I)) as whole words, and once found, an empty string will be returned, else, the input string will be returned.

If there are too many items in Glist, you could leverage a regex trie (see here how to use the trieregex library to generate such tries.)

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