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Python String | lower() method with Examples

Python String lower() method with Examples on capitalize(), center(), count(), encode(), find(), format(), index(), join(), lower(), ljust(), isupper(), istitle(), isspace(), isprintable(), isnumeric(), islower() etc.

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Python String lower() Method

Python lower() method returns a copy of the string after converting all the characters into lowercase.

Signature

lower()

Parameters

No parameter.

Return

It returns a lowercase string.

Let's see some examples of lower() method to understand it's functionalities.

Python String lower() Method Example 1

See a simple example in which string is converting into lowercase.

# Python lower() method example
# Variable declaration
str = "TheDeveloperBlog"
# Calling function
str = str.lower()
# Displaying result
print(str)

Output:

TheDeveloperBlog

Python String lower() Method Example 2

String can be varried and has any case of letters. The method will return a new string of lowercase.

# Python lower() method example
# Variable declaration
str = "Welcome To JAVAtpoint, WWW.JAVATPOINT.COM"
# Calling function
str = str.lower()
# Displaying result
print(str)

Output:

welcome to TheDeveloperBlog, www.TheDeveloperBlog.com

Python String lower() Method Example 3

We can test it whether it returning lowercase by using if statement. See the example below.

# Python lower() method example
# Variable declaration
str = "JAVATPOINT"
# Calling function
if str.lower() == "TheDeveloperBlog":
    print("lowercase")
else:
    print("not lowercase")

Output:

lowercase

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