Python: Create a given flat list of all the keys in a flat dictionary

Last update on April 19 2025 12:57:45 (UTC/GMT +8 hours)

Keys of Flat Dictionary

Write a Python program to create a flat list of all the keys in a flat dictionary.

• Use dict.keys() to return the keys in the given dictionary.
• Return a list() of the previous result.

Sample Solution:

Python Code:

# Define a function to extract and return a list of keys from a dictionary.
def keys_only(students):
    return list(students.keys())  # Use the keys() method to get the keys from the dictionary.

# Create a dictionary of students with names as keys and their respective grades as values.
students = {
    'Laura': 10,
    'Spencer': 11,
    'Bridget': 9,
    'Howard ': 10,  # Note: There is an extra space at the end of 'Howard'.
}

# Print the original dictionary elements.
print("Original directory elements:")
print(students)

# Call the 'keys_only' function to extract keys and print them as a flat list.
print("\nFlat list of all the keys of the said dictionary:")
print(keys_only(students)) 

Sample Output:

Original directory elements:
{'Laura': 10, 'Spencer': 11, 'Bridget': 9, 'Howard ': 10}

Flat list of all the keys of the said dictionary:
['Laura', 'Spencer', 'Bridget', 'Howard ']

Flowchart:

For more Practice: Solve these Related Problems:

• Write a Python program to create a flat list of keys from a nested dictionary by concatenating keys with a specified separator.
• Write a Python program to extract all keys from a flat dictionary and then sort them alphabetically.
• Write a Python program to generate a list of keys from a dictionary and filter out keys that do not match a given pattern.
• Write a Python program to retrieve keys from a dictionary and then compute the frequency of each key if duplicates exist.

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Python Code Editor: