when I tried to import requests, I got the TypeError

Please refer to our [Stack Overflow tag](https://stackoverflow.com/questions/tagged/python-requests) for guidance.
Env: python3.6  centos

I got the following traceback

Traceback (most recent call last):
  File "main.py", line 3, in <module>
    from transfer import search, strip
  File "/usr/src/app/transfer.py", line 5, in <module>
    from proxies import proxy_maintainer
  File "/usr/src/app/proxies.py", line 6, in <module>
    import requests
  File "/usr/local/lib/python3.6/dist-packages/requests/__init__.py", line 95, in <module>
    from urllib3.contrib import pyopenssl
  File "/usr/local/lib/python3.6/dist-packages/urllib3/contrib/pyopenssl.py", line 46, in <module>
    import OpenSSL.SSL
  File "/usr/local/lib/python3.6/dist-packages/OpenSSL/__init__.py", line 8, in <module>
    from OpenSSL import crypto, SSL
  File "/usr/local/lib/python3.6/dist-packages/OpenSSL/crypto.py", line 12, in <module>
    from cryptography import x509
  File "/usr/local/lib/python3.6/dist-packages/cryptography/x509/__init__.py", line 8, in <module>
    from cryptography.x509.base import (
  File "/usr/local/lib/python3.6/dist-packages/cryptography/x509/base.py", line 16, in <module>
    from cryptography.x509.extensions import Extension, ExtensionType
  File "/usr/local/lib/python3.6/dist-packages/cryptography/x509/extensions.py", line 13, in <module>
    from asn1crypto.keys import PublicKeyInfo
  File "/usr/lib/python3/dist-packages/asn1crypto/keys.py", line 22, in <module>
    from ._elliptic_curve import (
  File "/usr/lib/python3/dist-packages/asn1crypto/_elliptic_curve.py", line 51, in <module>
    from ._int import inverse_mod
  File "/usr/lib/python3/dist-packages/asn1crypto/_int.py", line 56, in <module>
    from ._perf._big_num_ctypes import libcrypto
  File "/usr/lib/python3/dist-packages/asn1crypto/_perf/_big_num_ctypes.py", line 35, in <module>
    libcrypto_path = find_library(b'crypto' if sys.version_info < (3,) else 'crypto')
  File "/usr/lib/python3.6/ctypes/util.py", line 313, in find_library
    return _findSoname_ldconfig(name) or \
  File "/usr/lib/python3.6/ctypes/util.py", line 283, in _findSoname_ldconfig
    res = re.search(regex, p.stdout.read())
  File "/usr/lib/python3.6/re.py", line 182, in search
    return _compile(pattern, flags).search(string)
TypeError: cannot use a bytes pattern on a string-like object

Please help me

Hi @luckcry, as the top of your issue says we only triage bugs in Requests on this issue tracker. Usage questions should be directed to StackOverflow.

The stack trace provided isn't related to Requests, you'll need to make sure your dependencies are up to date.

> 
> 
> Hi @luckcry, as the top of your issue says we only triage bugs in Requests on this issue tracker. Usage questions should be directed to StackOverflow.
> 
> The stack trace provided isn't related to Requests, you'll need to make sure your dependencies are up to date.

Thanks for your reply, I will issue more strictly to related repositories.

I have tried to update all dependencies related to it, but still trapped in it. 

Now I have said goodbye to the issue by upgrade Python version to 3.7.


^*^