ERROR: Could not build wheels for bcrypt which use PEP 517 and cannot be installed directly

Question

The interpreter configuration in pycharm became invalid for some reason so I created a new virtual environment for the project that I was working on, and installed the dependencies again. But I am having trouble in installing bcrypt again. Here's the complete error. The project was working fine with the previous interpreter so I doubt that the python version has anything to do with it. I tried installing wheel as well as the error said could not build wheels but that didn't do the job as well.

The complete error:

Collecting flask-bcrypt
      Using cached https://files.pythonhosted.org/packages/1d/c0/6d4c04d007d72b355de24e7a223978d1a95732245f
    9e9becbf45d3024bf8/Flask-Bcrypt-0.7.1.tar.gz
    Requirement already satisfied: Flask in c:\users\User\appdata\local\programs\python\python38-3
    2\lib\site-packages (from flask-bcrypt) (1.1.2)
    Collecting bcrypt (from flask-bcrypt)
      Using cached https://files.pythonhosted.org/packages/d8/ba/21c475ead997ee21502d30f76fd93ad8d5858d19a3
    fad7cd153de698c4dd/bcrypt-3.2.0.tar.gz
      Installing build dependencies ... done
      Getting requirements to build wheel ... done
        Preparing wheel metadata ... done
    Requirement already satisfied: Jinja2>=2.10.1 in c:\users\User\appdata\local\programs\python\p
    ython38-32\lib\site-packages (from Flask->flask-bcrypt) (2.11.2)
    Requirement already satisfied: Werkzeug>=0.15 in c:\users\User\appdata\local\programs\python\p
    ython38-32\lib\site-packages (from Flask->flask-bcrypt) (1.0.1)
    Requirement already satisfied: itsdangerous>=0.24 in c:\users\User\appdata\local\programs\pyth
    on\python38-32\lib\site-packages (from Flask->flask-bcrypt) (1.1.0)
    Requirement already satisfied: click>=5.1 in c:\users\User\appdata\local\programs\python\pytho
    n38-32\lib\site-packages (from Flask->flask-bcrypt) (7.1.2)
    Requirement already satisfied: six>=1.4.1 in c:\users\User\appdata\roaming\python\python38\sit
    e-packages (from bcrypt->flask-bcrypt) (1.15.0)
    Requirement already satisfied: cffi>=1.1 in c:\users\User\appdata\local\programs\python\python
    38-32\lib\site-packages (from bcrypt->flask-bcrypt) (1.14.2)
    Requirement already satisfied: MarkupSafe>=0.23 in c:\users\User\appdata\local\programs\python
    \python38-32\lib\site-packages (from Jinja2>=2.10.1->Flask->flask-bcrypt) (1.1.1)
    Requirement already satisfied: pycparser in c:\users\User\appdata\local\programs\python\python
    38-32\lib\site-packages (from cffi>=1.1->bcrypt->flask-bcrypt) (2.20)
    Building wheels for collected packages: bcrypt
      Building wheel for bcrypt (PEP 517) ... error
      ERROR: Command errored out with exit status 1:
       command: 'c:\users\User\appdata\local\programs\python\python38-32\python.exe' 'c:\users\User\appdata\local\programs\python\python38-32\lib\site-packages\pip\_vendor\pep517\_in_process.p
    y' build_wheel 'C:\conda_temp\tmpgl0zt2ul'
           cwd: C:\conda_temp\pip-install-9i9ne9yb\bcrypt
      Complete output (15 lines):
      running bdist_wheel
      running build
      running build_py
      creating build
      creating build\lib.win32-3.8
      creating build\lib.win32-3.8\bcrypt
      copying src\bcrypt\__about__.py -> build\lib.win32-3.8\bcrypt
      copying src\bcrypt\__init__.py -> build\lib.win32-3.8\bcrypt
      copying src\bcrypt\py.typed -> build\lib.win32-3.8\bcrypt
      running build_ext
      generating cffi module 'build\\temp.win32-3.8\\Release\\_bcrypt.c'
      creating build\temp.win32-3.8
      creating build\temp.win32-3.8\Release
      building '_bcrypt' extension
      error: Microsoft Visual C++ 14.0 is required. Get it with "Build Tools for Visual Studio": https://vi
    sualstudio.microsoft.com/downloads/
      ----------------------------------------
      ERROR: Failed building wheel for bcrypt
      Running setup.py clean for bcrypt
    Failed to build bcrypt
    ERROR: Could not build wheels for bcrypt which use PEP 517 and cannot be installed directly
    WARNING: You are using pip version 19.2.3, however version 20.2.2 is available.
    You should consider upgrading via the 'python -m pip install --upgrade pip' command.

The error is pretty clear: `error: Microsoft Visual C++ 14.0 is required. Get it with "Build Tools for Visual Studio": https://visualstudio.microsoft.com/downloads/` — C.Nivs, Aug 20 '20 at 16:34
Does this answer your question? [Pip error: Microsoft Visual C++ 14.0 is required](https://stackoverflow.com/questions/44951456/pip-error-microsoft-visual-c-14-0-is-required) — C.Nivs, Aug 20 '20 at 16:35
@C.Nivs I have Visual Studio as well but I am working on Pycharm — stumbling_errors, Aug 20 '20 at 16:36
Right, the link installs the build tools for C++, and doesn't require VS — C.Nivs, Aug 20 '20 at 16:37
@C.Nivs can you please tell me what exactly do I need to install from that link? — stumbling_errors, Aug 20 '20 at 16:39
@C.Nivs and my problem is in Pycharm, what good would installing vs tools do? — stumbling_errors, Aug 20 '20 at 16:42
To install the build tools, you should be able to download them from [here](https://visualstudio.microsoft.com/visual-cpp-build-tools/) — C.Nivs, Aug 20 '20 at 16:42
It's not visual studio, it's visual c++, and it needs it to build the wheels for the package you are installing — C.Nivs, Aug 20 '20 at 16:43

score 19 · Answer 1 · edited Sep 29 '20 at 07:28

19

try using these commands:

python -m pip install --upgrade pip
python -m pip install --no-use-pep517 bcrypt

edited Sep 29 '20 at 07:28

Chaitanya Kesanapalli

133
1
8

answered Sep 21 '20 at 20:32

MANJUNATH B

191
3

1

python -m pip install --upgrade pip – Piyush Balapure Sep 22 '20 at 05:58
5

`--no-use-pep517` is a brilliant suggestion, `bcrypt` was installed with no headache using this option. – sanyassh Oct 21 '20 at 14:33
It didn't fix my problem at first. Then I've installed these libraries using brew and then used your answer and it's fixed. https://stackoverflow.com/a/56700040/5186565 – Cagatay Barin Mar 11 '21 at 10:41
I am working via Visual studio Code IDE and just this ```python -m pip install --upgrade pip``` solved the code for me. later I just reinstalled bcrypt via ```pip install bcrypt ``` and solved! – Corina Roca Oct 07 '21 at 16:58

score 1 · Answer 2 · edited Aug 25 '21 at 22:10

1

What I did might work for you also:

$ python -m pip install --no-use-pep517 bcrypt
$ python -m pip install --upgrade pip

and it worked.

edited Aug 25 '21 at 22:10

Iguananaut

19,186
4
48
59

answered Aug 25 '21 at 19:41

Shubhajeet Pradhan

21
1
6

score 0 · Answer 3 · answered Jul 05 '21 at 17:43

0

Changing python from 32-version to 64-version may be solution. It helped me.

answered Jul 05 '21 at 17:43

afkalipt

1

score -1 · Answer 4 · answered Jan 19 '21 at 05:56

-1

try

pip install pep517

PIP is very unreliable, it needs over 350 different packages under python, and the system as well

answered Jan 19 '21 at 05:56

user3265051

19
6

DMG · Answer 5 · 2021-04-14T04:51:18.153

-1

I downloaded and installed

"microsoft visual c++ build tools" https://go.microsoft.com/fwlink/?LinkId=691126

and restarted the computer and worked for me.

edited Apr 14 '21 at 04:51

answered Apr 13 '21 at 04:46

DMG

33
1
6

ERROR: Could not build wheels for bcrypt which use PEP 517 and cannot be installed directly

5 Answers5

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