how to remove first 3 characters from a string in python code example

Example 1: how to remove first letter of a string python

s = "hello"
print s[1:]

Example 2: strip first occurence of substring python

>>>mystring = "Description: Mary had a little lamb Description: "
>>>print mystring.replace("Description: ","",1)

"Mary had a little lamb Description: "

Example 3: remove n characters from string python

example_string = "Hello there"

def remove_chars(n, string):
    list_of_chars_in_string = [char for char in string] 
    
    for num in range(n):
        list_of_chars_in_string.pop() # Removes last n characters in string
    
    new_string = ''.join(list_of_chars_in_string)
    return new_string