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Python String | islower() method with Examples

Python String islower() 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 islower() Method

Python string islower() method returns True if all characters in the string are in lowercase. It returns False if not in lowercase.

Signature

islower()

Parameters

No parameter is required.

Return

It returns either True or False.

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

Python String islower() Method Example 1

A simple example to understand how to apply this method. It returns true, see the example below.

# Python islower() method example
# Variable declaration
str = "TheDeveloperBlog"
# Calling function
str2 = str.islower()
# Displaying result
print(str2)

Output:

True

Python String islower() Method Example 2

It returns False if any single char found in other case than lowercase. See the example below.

# Python islower() method example
# Variable declaration
str = "Welcome To JavaTpoint"
# Calling function
str2 = str.islower()
# Displaying result
print(str2)

Output:

False

Python String islower() Method Example 3

String can have digits also and this method works in letters case and ignores digits. So it returns True, see the example below.

# Python islower() method example
# Variable declaration
str = "hi, my contact is 9856******"
# Calling function
str2 = str.islower()
# Displaying result
print(str2)

Output:

True

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