Answer:
Following are the code to this question:
def string_argument(val): #Defining a method string_argument
w= val.split() #Define variable that split value
if len(w) < 2: # Define condition to check value length
return None #return value
if w[1][-1] in ",;.!?": #Define condition to check special character
return w[1][:-1] #return second word
return w[1] # return value
print(string_argument("good morning hello?")) #call method and print return value
print(string_argument("hii morning, DEV"))#call method and print return value
print(string_argument("how are you? MR"))#call method and print return value
print(string_argument("dev lambda. Who"))#call method and print return value
print(string_argument("thanks")) #call method and print return value
Output:
None
morning
None
lambda
None
Explanation:
In the given python program, a method "string_argument" is declared, that accepts a value val in its parameter, inside the method, another variable "w" is used, that splits the argument value. In the next line, two if conditional block is used which can be described as follows:
- In the first block, it will check the length, it is not less then 2, if this condition is true it will return none.
- In the second if the block it will check, that variable val holds any special character in its second word so, it will return the second word.
