IO BASIC

#files IO basics """
# "r" = open file for reading - default mode
# "w" = open file for writing or create a new file and it remove all data of file and make a new file when runs
# "x" = creates file if not exist
# "a" = add more content to a file like append or create a new file.append means add more in file that already exist
# "t" = text mode
# "b" = binary mode
# "+" = write and read mode """