Python 3 invalid syntax error when reading file

Asked Jan 11 '20 at 15:40

Active Jan 11 '20 at 15:40

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I am attempting to learn python 3 and there is an exercise in the book that requires us to supply a filename on the command line when invoking the script. However, I am getting a syntax error and I cant figure out what I am doing wrong.

The environment: Windows 10 laptop running Python 3.8.0 x64 bit

The script:

from sys import argv

script, filename = argv

txt = open(filename)

print("Here's your file %r" % filename)
print(txt.read())

print("Type the filename again: ")
file_again = input("> ")

txt_again = open(file_again)

print txt_again.read()

The commandline input:

PS E:\~Python Scripts> python .\ex15.py ex15_sample.txt

The error:

    PS E:\~Python Scripts> python .\ex15.py ex15_sample.txt                                                                   File ".\ex15.py", line 15
    print txt_again.read()
          ^
SyntaxError: invalid syntax

Thanks in advance!

asked Jan 11 '20 at 15:40

Kevin Ivers

1

Python 3 uses a print function `print(text_again.read())` – Brendan Abel Jan 11 '20 at 15:42
Look at how that `print` line differs from the other lines where you used `print`. Can you spot the difference just from that? – Martijn Pieters Jan 11 '20 at 15:44
as @BrendanAbel , and Martijn Pieters♦ already mentioned, it is a simple parentheses error that is required to be fixed. I suggest you are not using any IDEs that would solve that? – Vusal Ismayilov Jan 11 '20 at 16:10
Thank you all! I can't believe I didn't notice that. – Kevin Ivers Jan 11 '20 at 16:28

Python 3 invalid syntax error when reading file

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