Python - String Method - zfill() Tutorial

The zfill() method will fill the string with '0' from the left until the length of the string reaches the specified length.

Syntax-

String.zfill(width)

#width- It will fill the string with '0' from left until the 
whole string including '0' will reach the length of the 
specified width

Example-

str1 = "Hello Sam"
print(str1.zfill(10))
print(str1.zfill(15))
print(str1.zfill(5))

 Output-

0Hello Sam
000000Hello Sam
Hello Sam