what is separator in python code example

Example 1: how to split a string by character in python

def split(word): 
    return [char for char in word]  
      
# Driver code 
word = 'geeks'
print(split(word)) 

#Output ['g', 'e', 'e', 'k', 's']

Example 2: split string python

file='/home/folder/subfolder/my_file.txt'
file_name=file.split('/')[-1].split('.')[0]