Python Keyerror

A Python KeyError exception is something that raised while you decide to obtain a key that is not present within a dictionary ( dict ). Python official documentation states that the KeyError is raised while a mapping key is obtained and is not located within the mapping. The most popular mapping in Python is the dictionary.

 

Fix key error

program:

values = {"x" : 1, "y" : 2, "z" : 3}

# Utilisng the value directly can cause an error.

try:

    print(values["w"])

except KeyError:

    print("encountered the key error")

 

# We apply to get to reliably get a value.

print(values.get("w"))

 

Output

Encountered the key error

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