Python: Find whether a given string starts with a given character using Lambda

Last update on April 22 2025 12:55:56 (UTC/GMT +8 hours)

7. String Start Check Lambda

Write a Python program to find whether a given string starts with a given character using Lambda.

Sample Solution:

Python Code :

# Define a lambda function 'starts_with' that checks if a given string starts with 'P'
starts_with = lambda x: True if x.startswith('P') else False

# Check if the string 'Python' starts with 'P' using the 'starts_with' lambda function
# Print the result which will be 'True' if the string starts with 'P', otherwise 'False'
print(starts_with('Python'))

# Redefine the lambda function 'starts_with' (same as before) to check if a string starts with 'P'
# Check if the string 'Java' starts with 'P' using the 'starts_with' lambda function
# Print the result which will be 'True' if the string starts with 'P', otherwise 'False'
print(starts_with('Java'))

Sample Output:

True
False

Explanation:

In the exercise above -

Defines a lambda function named 'starts_with' that checks if a given string starts with the letter 'P'. The lambda function uses the "startswith()" method, which returns 'True' if the string starts with the specified prefix ('P' in this case), otherwise it returns 'False'.
Calls the "starts_with()" lambda function with the string 'Python' as an argument:

The lambda function checks if the string 'Python' starts with 'P'.
Prints the result of this check, which will be 'True' since the string 'Python' starts with 'P'.

Redefines the lambda function "starts_with()" (although it's the same as before) and uses it to check if the string 'Java' starts with 'P':

The lambda function checks if the string 'Java' starts with 'P'.
Prints the result of this check, which will be 'False' since the string 'Java' does not start with 'P'.

For more Practice: Solve these Related Problems:

Write a Python program to check if a given string ends with a specified substring using lambda.
Write a Python program to determine if a given string contains a specified character only at even-indexed positions using lambda.
Write a Python program to verify if a given string starts and ends with the same character using lambda.
Write a Python program to check if a given string starts with a vowel using lambda.

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Python Code Editor:

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