How to run code type-checked python code using Pyright?

Asked Jun 11 '21 at 06:48

Active Jun 11 '21 at 06:48

Viewed 101 times

I have installed Pyright for type-checking my Python code, but I am not sure how to run it. For example, this is the code I have

def add(x: int, y: int):
    return x + y


print(add(10, 20))

When I try to run it with python, python typed.py, it gives me the following errors:

  File "typed.py", line 2
    def add(x: int, y: int):
             ^
SyntaxError: invalid syntax

I have run through the doc, but I have found no option for compiling or running the code. How can I run these typed Python code?

asked Jun 11 '21 at 06:48

John Winston

Which Python version are you running? – NotAName Jun 11 '21 at 06:51
Are u run the code by Python2? – pepper Jun 11 '21 at 06:51
1

@pepper, not necessarily. Type hinting was introduced from Python 3.5 so any version prior to 3.5 would cause issues. – NotAName Jun 11 '21 at 06:53
1

Oh If I run the code with `Python3.9` it is working. @pavel thank you for the hints. – John Winston Jun 11 '21 at 07:05
Type hints were introduced in Python 3.5. Earlier versions do not recognize them and report a syntax error. You are apparently trying to run this code in a Python 2 interpreter. – BoarGules Jun 11 '21 at 07:21

0 Answers0