├── README.md
├── interview_requirements.txt
└── verify_tls.py


/README.md:
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 1 | # Python Interview Preparation
 2 | 
 3 | Thanks for interviewing at Stripe.
 4 | To make sure that we can use our time best in the interviews,
 5 | we'd like to have you do some setup on your laptop in advance.
 6 | If you don't have a laptop, let your recruiter know
 7 | and they will supply you with a loaner laptop for your in-person interviews.
 8 | 
 9 | First, _clone_ or _download_ this repository to your computer
10 | via the links on the right
11 | (creating a fork of the repository is not necessary).
12 | 
13 | Note, we will be working with **Python 3** (Python 3.6 or later).
14 | See the [RealPython installation guide], if you haven't installed Python 3 yet.
15 | 
16 | We'll create a [virtual environment] with [venv]
17 | and install some Python packages that will be useful in your interviews.
18 | 
19 | > If for some reason you must use Python 2.7,
20 | > use [virtualenv] to create the virtual environment.
21 | 
22 | **Create a new virtual environment** called `interview_env` and _activate_ it.
23 | 
24 | ```bash
25 | $ python3 -m venv ./interview_env
26 | $ source ./interview_env/bin/activate
27 | ```
28 | 
29 | The `activate` script is for Bash and Zsh on Mac or Linux.
30 | For other shells, such as Fish or Csh, see the [venv] documentation.
31 | 
32 | On Windows (assuming `cmd.exe`):
33 | 
34 | ```batch
35 | > python3 -m venv .\interview_env
36 | > .\interview_env\Scripts\activate
37 | ```
38 | 
39 | Next, **install some requirements** into the activated virtual environment:
40 | 
41 | ```bash
42 | (interview_env) $ pip install -r interview_requirements.txt
43 | ```
44 | 
45 | Finally, in that activated virtual environment, verify that your environment supports [TLS 1.2] or later:
46 | 
47 | ```bash
48 | (interview_env) $ python verify_tls.py
49 | TLS 1.2 supported; no action required.
50 | ```
51 | 
52 | If you see a response that begins with `Error`, follow the instructions it provides.
53 | [MacOS SSL debugging] may be helpful.
54 | 
55 | 
56 | [RealPython installation guide]: https://realpython.com/installing-python/
57 | [virtual environment]: https://realpython.com/python-virtual-environments-a-primer/
58 | [venv]: https://docs.python.org/3/library/venv.html
59 | [virtualenv]: https://virtualenv.pypa.io/en/latest/installation.html
60 | [TLS 1.2]: https://pyfound.blogspot.com/2017/01/time-to-upgrade-your-python-tls-v12.html
61 | [MacOS SSL debugging]: https://stackoverflow.com/questions/58280484/ssl-module-in-python-is-not-available-on-osx/60467942#60467942
62 | 


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/interview_requirements.txt:
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1 | six==1.16.0
2 | requests==2.31.0; python_version > '3.6'
3 | requests==2.25.1; python_version <= '3.6'
4 | urllib3<2.0
5 | 


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/verify_tls.py:
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 1 | #! /usr/bin/env python3
 2 | 
 3 | import requests
 4 | 
 5 | 
 6 | def main():
 7 |     version = requests.get('https://www.howsmyssl.com/a/check').json()['tls_version']
 8 |     if version < "TLS 1.2":
 9 |         url = "https://pyfound.blogspot.com/2017/01/time-to-upgrade-your-python-tls-v12.html"
10 |         print("Error: The Stripe API requires TLS version 1.2, you are running {version}"
11 |               "\n\nPlease see {url}\nfor instructions to update your environment.".format(
12 |                   version=version, url=url))
13 |         exit(1)
14 |     print("TLS 1.2 supported; no action required.")
15 | 
16 | 
17 | if __name__ == "__main__":
18 |     main()
19 | 


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