Which of the following is a valid way to comment a single line in Python?
A. \ comment
B. / comment
C. <!-- comment -->
D. # comment
Answer: Option D
A. \ comment
B. / comment
C. <!-- comment -->
D. # comment
Answer: Option D
Which of the following is a valid variable name in Python?
A. my-variable
B. 123variable
C. _my_variable
D. $variable
What is the maximum possible length of an identifier?
A. 31 characters
B. 63 characters
C. 79 characters
D. none of the mentioned
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