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High level error codes

0x1080    PEM - No PEM header or footer found
0x1100    PEM - PEM string is not as expected
0x1180    PEM - Failed to allocate memory
0x1200    PEM - RSA IV is not in hex-format
0x1280    PEM - Unsupported key encryption algorithm
0x1300    PEM - Private key password can't be empty
0x1380    PEM - Given private key password does not allow for correct decryption
0x1400    PEM - Unavailable feature, e.g. hashing/encryption combination

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import threading


class SharingChecker:
    number: int = 0

    def increment(self) -> None:
        SharingChecker.number += 1

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# Python 3.7
import io
import unittest
import unittest.mock


# -- function --
def print_hello_world() -> None:
    print('Hello World!')
    

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Mock file with string in Python

This is an example on how to mock a file with string.

Use case

Testing a function which opens a file and does some kind of operation on it.

About the example