Python中 tuple object is not callable问题

Question

from sys import argv script, input_file = argv def print_all(f):     print f.read() def rewind(f):     f.seek(0) def print_a_line(line_count, f):     print line_count, f.readline() current_file = open(input_file) print "First let's print the whole file:\n" print_all(current_file) print "Now let's rewind, kind of like a tape." rewind(current_file) print "Let's print three lines:" current_line = 1 print_a_line = (current_line, current_file) current_line = current_line + 1 print_a_line(current_line, current_file) current_line = current_line + 1 print_a_line(current_line, current_file)

Answer 1

找到错误了 27行多了个等号。。