Question

Write a function show_value() that takes two arguments:

1) a potential key and
2) a dictionary name
If the potential key is in the dictionary, the function should return the value for that key. if the potential key, say invalid_key, is not in the dictionary, it should return the string

Answer 1

The student's question relates to creating a Python function that checks for the presence of a key in a given dictionary and returns the associated value or a specified message if the key is not present.

Step-by-step explanation:

The function show_value() that you are asking about is used to check if a given key exists in a dictionary and return its associated value if it does. If the key is not found, it should return a specific string. Below is the Python code for the show_value() function:

def show_value(potential_key, dictionary_name):
if potential_key in dictionary_name:
return dictionary_name[potential_key]
else:
return 'invalid_key is not in the dictionary'

You simply need to call this function and pass the key you want to check for, along with the dictionary you are working with as arguments. The function will handle the rest.

This function takes two arguments, a potential key and a dictionary name. It checks if the potential key exists in the dictionary using the 'in' operator. If it does, it returns the corresponding value. If it doesn't, it returns the string 'invalid_key'.