Typing for python2.7?

Question

Is there a way to do the following in python2.7:

class DailyPriceObj:
    def __init__(self):
        self.date = None    #datetime.date
        self.sd_buy = None  # float
        self.hd_buy = None  # float
        self.sd_rent = None # float
        self.hd_rent = None # float
        self.revenue = None # float

I've used typing in later versions, but for a certain project the codebase is 2.7.

Python 2.7 goes out of support next January. You must upgrade now — Daniel Roseman, Oct 10 '19 at 19:17
Keep in mind, type annotations in Python are merely suggestions - the interpreter isn't going to hold anyone to adhere to the types that have been annotated. That being said, the only support that Python 2 has for type annotations is through [specially formatted comments](https://stackoverflow.com/a/35230792/4739755) — b_c, Oct 10 '19 at 19:18
Every version of Python is strongly typed. So, are you asking how to use type annotations in Python 2.7? — juanpa.arrivillaga, Oct 10 '19 at 19:39
Does this answer your question? [Type hinting in Python 2](https://stackoverflow.com/questions/35230635/type-hinting-in-python-2) — AMC, Feb 08 '20 at 02:19

score 0 · Accepted Answer · answered Oct 10 '19 at 19:20

0

As you can read in the documentation:

https://github.com/python/typing

This GitHub repo is used for development of the typing module defined by PEP 484. The module is available in Python since version 3.5.0 on a provisional basis until Python 3.7.0.

So, no - you cannot use it with 2.7, sadly.

answered Oct 10 '19 at 19:20

Joanna

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As @b_c says in the comments you can still you a type checker with python 2.7, you just need to include the annotations in comments (see [here](https://mypy.readthedocs.io/en/latest/python2.html)) – tomjn Oct 10 '19 at 19:29

Typing for python2.7?

1 Answers1