String Lowercase in Python

Use the lower() method to transform a whole string into lowercase.

regular_text = "This is a Regular TEXT."

lower_case_text = regular_text.lower()

print(regular_text)
#This is a Regular TEXT.

print(lower_case_text)
#this is a regular text.

Notice that the original regular_text variable remains unchanged, thus you need to assign the return of the method to a new variable, lower_case_text in this case.