python fill zeros left code example

Example 1: pad zeros to a string python

my_str='9'
my_str.zfill(2)

Example 2: fill zero behind number python

f_num.strip().zfill(2)

Example 3: string format zero padded int python

i = 69
s = f'{i:03}'  # for Python >= 3.6, zero padding to have 3 digits

Example 4: python fill zeros left

>>> n = '4'
>>> print(n.zfill(3))
004