Is Python Case Sensitive When Dealing With Identifiers? (2024)

Is Python Case Sensitive When Dealing With Identifiers?

Python is a case-sensitive language and hence identifiers are case-sensitive. Therefore, it considers uppercase and lowercase characters differently. This function is beneficial while naming identifiers to make code more convenient way. Python is a popular programming language that has its own rules for grammar and conventions for naming identifiers.

Criteria for Identifiers in Python

• Python has a total of 35 reserved keywords. The main function of these keywords is to define the syntax of the programming language.
• All identifiers in the same scope will be distinct.
• Use of the combination of lowercase characters (a-z), uppercase characters (A-Z), digital(0-9), and underscore characters while naming identifiers.
• Identifiers in Python are case-sensitive. Eg: ”myPet” and ”my pet” are different.
• Special characters such as @,$, %,&,*, and # cannot be used in identifier names.
• Identifiers must begin with a non-numeric character. The underscore can be the first character of the identifier name.
• length of the identifier name can vary.

Example of a Valid Python Identifier

my_variable = 42my_function = lambda x: x * 2MyClass = type('MyClass', (object,), {'attribute': 'value'})

In this example, we have three valid identifiers:

1. my_variable: Identifies a variable holding the value 42.
2. my_function: Identifies a lambda function that doubles its input.
3. MyClass: Identifies a dynamically created class with an attribute named 'attribute'.

Remember that Python is case-sensitive, so my_variable and My_Variable would be considered as two different identifiers. Additionally, you should avoid using reserved keywords like if, else, while, etc., as identifiers, as they have specific meanings in the Python language and cannot be used as variable names.

FAQ-Is Python Case sensitive when dealing with identifiers