Why Does My Python 2.7 Code Throw a NameError When Taking User Input?

Patricia Arquette
Release: 2024-10-26 02:00:02
Original
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Why Does My Python 2.7 Code Throw a NameError When Taking User Input?

Getting User Input as a String in Python 2.7

When attempting to obtain user input and manipulate it as a string without enclosing it in quotes, users may encounter issues due to Python 2.7's default input function.

Problem:

Consider the following code:

<code class="python">testVar = input("Ask user for something.")</code>
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If a user inputs "Hello," the code raises an error:

<code class="python">NameError: name 'Hello' is not defined</code>
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This is because input() evaluates the input as Python code.

Solution:

To resolve this issue, use raw_input() instead of input().

<code class="python">testVar = raw_input("Ask user for something.")</code>
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raw_input() returns the verbatim string entered by the user, allowing for easy manipulation without the need for enclosing quotations.

Caution:

While input() can be useful for evaluating user input as code, it's generally recommended to avoid using it and stick to raw_input() for string manipulation.

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