Python
Why are local variable names beginning with an underscore discouraged in Python Programming?

they are used to indicate global variables
they slow down execution
they confuse the interpreter
they are used to indicate a private variables of a class

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Python
Which of the following statements is true?

When there is a deviation from the rules of a programming language, a semantic error is thrown
All raised standard exceptions must be handled in Python
If any exception is thrown in try block, else block is executed
The standard exceptions are automatically imported into Python programs

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