3. Which can be an Identifier among them in Python?
(1 Point)
O 1abc
$12a
_xy1
O @python
Answers
Answer:
_xyz can be a identifier in Python.
_xy1 can be an Identifier in Python.
Extra Information
Rules for variables/identifiers in Python language
1. Variable/Identifier name can start with a letter or underscore ( _ ) character only. It cannot start with a digit.
2. Python is a case-sensitive language which means variable/identifiers names are also case-sensitive.
Example - These three are different variables age, AGE, Age
3. Variable/Identifier names can only have alphanumeric characters (A-Z, a-z, and 0-9) and underscore ( _ )
Variable can be short or long/descriptive.
Example - x, y, z, age, gender, Address, _var, etc.
Note - Variable names can't have whitespaces, special characters such as !, #, %, etc. and variable names can't be a keyword that is reserved such as float, int, true, false, none, etc.
What is case sensitivity?
Case sensitivity is the term that tells us about the programming language capability of making out differences between Upper Case Letters(A, B, C and so on) and Lower Case Letters (a, b, c and so on).
Python is created by Guido van Rossum and came into existence in 1991. It is a high-level and general programming language. It is a very lucid programming language as it has a good language construct and object-oriented approach. It is dynamically typed and garbage-collected.