Can someone explain this please?

Question

I got this question in a challenge, and am confused by the answer. Could someone explain it to me please?
Code:
What is the output of this code?
a = 'solo'
Print (a.zfill(6))

Answer: 00solo

Answer 1

The length of a is 4 characters. Using a.zfill(6) will make the length 6 by adding 0’s to the start of the string. https://www.w3schools.com/JUMP_LINK__&&__python__&&__JUMP_LINK/ref_string_zfill.asp

Answer 2

The zfill() method returns a copy of the string with '0' characters padded to the left.

The syntax of zfill() in Python is:

str.zfill(width)

Answer 3

Okay, thanks everyone!