Is Python Case Sensitive

Python is a case-sensitive programming language, which means that the language treats uppercase and lowercase characters differently. For example, in Python, the variable "x" is not the same as the variable "X". This behavior is different from some other programming languages, such as JavaScript, which are case-insensitive.

In Python, variable names, function names, and keywords are all case-sensitive. This means that if you define a variable "x" and then try to refer to it later as "X", Python will treat it as a different variable, and you'll get an error. Similarly, if you try to call a function "print" instead of "Print", Python will also give you an error.

Here's an example of how case sensitivity affects variable names in Python:

Output

Explanation:

In this example, we defined two variables, "x" and "X," with different values. When we print them out, we see that Python treats them as separate variables and assigns them different values.

Case sensitivity also applies to function names in Python. For example:

Output

Explanation:

the built-in function "print()" is different from the function "Print()". The former will work as expected, while the latter will give an error because it is not a defined function.

Keywords in Python are also case-sensitive. This means that if you use a keyword such as "if" or "for" in lowercase, it will work as expected. However, if you use it in uppercase, Python will treat it as a variable name, and you'll get an error.

Source code:

Output

Explanation:

In the above code, we have created two if statements. In the first if statement, we have used the proper syntax as Python is case-sensitive. We have created the first if statement with small i, and the second if statement has a capital I which means it is not correct syntax, so it will throw an error.

In addition to variable names, function names, and keywords, Python is also case-sensitive when it comes to file names. This means that the file "example.txt" is different from the file "Example.txt," and the interpreter will treat them as separate files.

It is important to keep in mind that Python is case-sensitive when naming variables, functions, and keywords. This can lead to errors and unexpected behavior if you're not careful. To avoid these issues, it is a good practice to use a consistent naming convention, such as using lowercase letters for all variable and function names.

In conclusion, Python is a case-sensitive programming language. This means that the language treats uppercase and lowercase characters differently. This applies to variable names, function names, keywords, and file names. It's important to keep in mind that case sensitivity can lead to errors and unexpected behavior if you're not careful, so it's a good practice to use a consistent naming convention.