36 lines
1,021 B
Python
36 lines
1,021 B
Python
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from sys import argv # import argv
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script, input_file = argv # define argv
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def print_all(f): # define a function
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print(f.read()) # print all
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def rewind(f): # define a function
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f.seek(0) # jump the starting point of a file
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def print_a_line(line_count, f): # define a function
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print(line_count, f.readline()) # pinrt a line on the file
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current_file = open(input_file) # open a file
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print("First let's print the whole file:\n") # print a script
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print_all(current_file) # call the function
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print("Now let's rewind, kind of like a tape.") # print a script
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rewind(current_file) # call the function
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print("Let's print three lines:") # print a script
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current_line = 1 # define a value
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print_a_line(current_line, current_file) # call the function
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#current_line = current_line + 1 # define a value
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current_line += 1
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print_a_line(current_line, current_file) # call the function
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#current_line = current_line + 1 # define a value
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current_line += 1
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print_a_line(current_line, current_file) # call the function
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