Python | Lowercase first character of a string



Method # 1: Using string slicing + lower()
This task can be easily accomplished using the lowercase method that provides lowercase characters provided to it and delimiting can be used to add the remainder of the line after the first lowercase character.

# Python3 code to demonstrate how it works
# Lowercase first character of line
# Using lower () + slicing lines

 
# initialization string

test_str = "GeeksforGeeks"

 
# print original line

print ( "The original string is:" + str (test_str))

 
# Using lower () + slicing lines
# Lowercase first character of line

res = test_str [ 0 ]. lower () + test_str [ 1 :]

 
# print result

print ( "The string after lowercasing initial character:" + str (res))

Output:

 The original string is: Python.Engineering The string after lowercasing initial character: geeksforGeeks 

Method # 2: Using lambda + line slice + lower()
A lambda function recipe must be added if we need to perform the task of handling None values ​​or empty strings, and it becomes necessary to handle edge cases.

# Python3 code to demonstrate how it works
# Lowercase first character of line
# Using lower () + slicing lines + lambda

 
# initialization string

test_str < / code> = "GeeksforGeeks"

  
# print the original line

print ( "The original string is:" + str (test_str))

 
# Usage lower () + line splitting + lambda
# Lowercase first character of the line

res = lambda test_str: test_str [: 1 ]. lower () +

  test_str [ 1 : ] if test_str else ` `

  
# print result

print ( "The string after lowercasing initial character:" + str (res (test_str)))

Output:

 The original string is: Python.Engineering The string after lowercasing initial character: geeksforGeeks