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Puzzle 30: Explanation

Explore the differences between Python's eval and exec functions, focusing on how eval handles expressions and exec executes statements. Understand their applications, including variable scope management and security considerations, to deepen your problem-solving skills for Python puzzles.

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Try it yourself

Try executing the code below to verify the results:

Python 3.8
a = eval('a = 7') 
val = eval('a * 3') 
print(val)

Explanation

The built-in eval function reads a Python expression as a string and returns its value.

We tend to split the code into two categories:

  1. Expressions are things that have a value (like5 / 7, or 1 < 3).
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