WHAT IS THE "LEN" AND "RANGE" FUNCTIONS DOING HERE ACTUALLY?

February 6, 2022

I am new to python and can not understand one thing in this code below:

def big_letter(text):
  for i in range(len(text)):
    text[i]= text[i].title()

names = ['nick', 'john', 'hugh', 'tony']
big_letter(names)
print(names)

I tried to manage things by deleting them in this code. They have some cost here but can not understand what exactly they did.

>Solution :

So, I believe this code is trying to convert all the contents of the names list to title case. Explanation of code:

def big_letter(text):
    for i in range(len(text)):# start a loop that runs for the length of list text
                              # basically trying to cycle through the elements of 
                              # the list one by one
        text[i]= text[i].title() # converting each element to title case and 
                                 # assigning them to the list
        # print(text)        # I have added this. uncomment to see the process

names = ['nick', 'john', 'hugh', 'tony']
big_letter(names)           # Calling the function while passing the parameter
print(names)                # printing the list