Understanding inputChoice() from PyInputPlus with Examples

Complete Guide to inputChoice() in PyInputPlus

The inputChoice() function from PyInputPlus allows users to select from a predefined list of choices. It simplifies validation by ensuring input matches one of the allowed items.

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🔹 Basic Usage

This example prompts the user to select one of the predefined items. If the input doesn't match, it will prompt again.

import pyinputplus as pyip

choice = pyip.inputChoice(['dog', 'cat', 'bird'])
print(f"You selected: {choice}")

What It Does:

• Asks user to enter "dog", "cat", or "bird".
• Rejects any other input.
• Note: It has a default prompt like Please select one of: dog, cat, bird
• Note: numbered is not supported in inputChoice()

Sample Output:

Please select one of: dog, cat, bird
moon
'moon' is not a valid choice.
Please select one of: dog, cat, bird
dog
You selected: dog

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🔹 Custom Prompt

fruit = pyip.inputChoice(['apple', 'banana'], prompt="Pick your favorite fruit: ")
print(f"Chosen fruit: {fruit}")

What It Does:

• Changes default prompt text.

Sample Output:

Pick your favorite fruit: banana
Chosen fruit: banana

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🔹 Limit Attempts + Default Fallback

food = pyip.inputChoice(['pizza', 'burger'], limit=2, default='pizza')
print(f"Food selected: {food}")

What It Does:

• User has 2 attempts to enter valid input.
• If both fail, "pizza" (default) is returned.

Sample Output:

Please select one of: pizza, burger
hotdog
'hotdog' is not a valid choice.
Please select one of: pizza, burger
samosa
'samosa' is not a valid choice.
Food selected: pizza

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🔹 Real-world Scenario: Confirm Action

confirm = pyip.inputChoice(['yes', 'no'], prompt="Are you sure you want to delete? (yes/no): ")
if confirm == 'yes':
    print("Deleted.")
else:
    print("Action canceled.")

Use Case:

• Useful for confirmations before critical operations.

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Conclusion: inputChoice() is a powerful and safe way to capture predefined responses, enhancing user experience and input validation.

📚 Related Topics from PyInputPlus:

• ➤ Introduction to PyInputPlus
• ➤ inputStr() from PyInputPlus
• ➤ inputNum() from PyInputPlus
• ➤ inputChoice() from PyInputPlus
• ➤ inputMenu() from PyInputPlus
• ➤ Other Important PyInputPlus Functions

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