Lowercase a string in Python

Problem description

How to lowercase a string in Python?

Problem solution

Python's built-in str.lower() method will be perfect for this example. See how you can use it:

str1 = "Example"
str2 = "EXAMPLE"
srt3 = "example" 

print(str1.lower()) # output: "example"
print(str2.lower()) # output: "example"
print(str3.lower()) # output: "example"

As you can see, it doesn't matter how many uppercase word have, after using lower() all of them will be lowercase.