file handling in python programiz

1f = open("test.txt")      # equivalent to 'r' or 'rt'
2f = open("test.txt",'w')  # write in text mode
3f = open("img.bmp",'r+b') # read and write in binary mode

1>>> f = open("test.txt")    # open file in current directory
2>>> f = open("C:/Python38/README.txt")  # specifying full path