Question

Write a Python function that takes two parameters: the first a list of strings and the second a single string. The function should return True or False depending on whether the string is in the list or not. For example, if the list contains eggs, milk, bananas, and the second parameter is pumpkin, the function should return False. Thank you.

Answer 1

Implement the program as follows:

1. define the function is_string_in_list() that accepts a list of string and a string value
2. initialize is_present to False
3. Use 'in' operator to check if the list contains str_val. 'in' operator returns True is value is present in list
4. Update is_present to True if str_val is present in list
5. return is_present
6. create a list, list1
7. call is_string_in_list() to check if the list contains a particular string value

Program:

Note: Please double-check the indentation using the screenshot provided as a reference

def is_string_in_list(list_of_string, str_val):     # define the function is_string_in_list() that accepts a list of string and a string value
    is_present = False                              # initialize is_present t0 False
    if str_val in list_of_string:                   # Use 'in' operator to check if the list contains str_val 
        is_present = True                           # Update is_present to True if str_val is present in list
    return is_present                               # return is_present
    
list1 = ['eggs', 'milk', 'bananas']                 # create a list, list1
print('list1', list1)
print(is_string_in_list(list1, 'pumpkin'))          # call is_string_in_list() to check if the list contains a particular string value

list2 = ['eggs', 'milk', 'bananas', 'pumpkin']
print('list2', list2)
print(is_string_in_list(list2, 'pumpkin'))

Screenshot:

Output:

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