String Left Padding with zfill Function

The `zfill` function is used to pad a string with specified characters on the left until it reaches the specified length. If the length of the original string is already equal to or greater than the specified length, no padding is performed.

Technology Stack : String method

Code Type : String Handling Function

Code Difficulty : Intermediate

                
                    
def zfill(arg1, arg2=0):
    """
    返回一个字符串，该字符串在原始字符串的左侧填充了指定的字符，直到达到指定的长度。
    如果指定的长度小于原始字符串的长度，则返回原始字符串。
    """
    return arg1.zfill(arg2)