files.py

import os

def main():  
    
    os.chdir("/workspace")
    # Open a file for writing and create it if it doesn't exist
    f = open("textfile.txt","w+")
    
    # Open the file for appending text to the end
    # f = open("textfile.txt","a+")

    # write some lines of data to the file
    for i in range(10):
        f.write("This is line %d\r\n" % (i+1))
    
    # close the file when done
    f.close()
    
    # Open the file back up and read the contents
    f = open("textfile.txt","r")
    if f.mode == 'r': # check to make sure that the file was opened
        # use the read() function to read the entire file
        # contents = f.read()
        # print (contents)
      
        fl = f.readlines() # readlines reads the individual lines into a list
        for x in fl:
            print (x)
    
if __name__ == "__main__":
    main()