The type of variables in Python

Haven’t written python code for more than one year, I met this simple problem:

Even the code have print out the value of “a” and “b” as 2 and 1, the condition check “if a >= b:” is false!

Spending more than 10 minutes, I eventually get the reason: the type of “a” is “int” but “b” is “string” (and the interpreter of Python will not report any warning about this “inconsistency”). I should have been taking enough care of the type of these variables.
Seems “print” can’t reveal adequate details of a variable, therefore it is highly suggested we using “pprint” instead of “print”.

The result will be

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