Which of the following is a bad Python variable name?1 point23spam_spamSPAM23Spam

Identifying a Bad Python Variable Name

1. Understanding Variable Naming Rules: In Python, a variable name must adhere to specific rules:

   • It can contain letters (a-z, A-Z), digits (0-9), and underscores (_).
   • It cannot start with a digit.
   • It cannot contain special characters or spaces.
   • It should not be a reserved word in Python.

2. Evaluating the Given Options:

   • 1point: This starts with a digit, which is invalid.
   • 23spam: This also starts with a digit, which is invalid.
   • spam: This is a valid variable name.
   • spamSPAM: This is also a valid variable name.
   • 23Spam: This starts with a digit, which is invalid.

3. Analyzing Each Option:

   • 1point: Invalid (starts with a digit).
   • 23spam: Invalid (starts with a digit).
   • spam: Valid (meets all naming rules).
   • spamSPAM: Valid (meets all naming rules).
   • 23Spam: Invalid (starts with a digit).

Final Answer

The bad Python variable names from the options provided are 1point, 23spam, and 23Spam as they all start with a digit, which is not allowed in Python.