"Failed building wheel for py-bcrypt"当点安装烧瓶用户时

Question

我正在尝试pip安装Flask的各种扩展。到目前为止，他们都成功了，我安装flask, flask-bcrypt等都没有问题，除了flask-user。

当我尝试pip安装flask-user时，我得到的第一个错误是"Failed building wheel for py-bcrypt"。

然后出现以下内容:

Failed to build py-bcrypt
Installing collected packages: py-bcrypt, pycrypto, flask-user
  Running setup.py install for py-bcrypt
    Complete output from command C:Python27Scriptsvenv_flaskScriptspython.e
xe -c "import setuptools, tokenize;__file__='c:\users\brandon\appdata\local
temp\pip-build-czloyh\py-bcrypt\setup.py';exec(compile(getattr(tokenize, 'op
en', open)(__file__).read().replace('rn', 'n'), __file__, 'exec'))" install -
-record c:usersbrandonappdatalocaltemppip-nk4rxx-recordinstall-record.txt
 --single-version-externally-managed --compile --install-headers C:Python27Scr
iptsvenv_flaskincludesitepython2.7py-bcrypt:
    running install
    running build
    running build_py
    running build_ext
    building 'bcrypt._bcrypt' extension
    C:UsersBrandonAppDataLocalProgramsCommonMicrosoftVisual C++ for Pyth
on9.0VCBincl.exe /c /nologo /Ox /MD /W3 /GS- /DNDEBUG -IC:Python27include
-IC:Python27Scriptsvenv_flaskPC /Tcbcrypt/bcrypt.c /Fobuildtemp.win32-2.7R
eleasebcrypt/bcrypt.obj
    bcrypt.c
    bcrypt/bcrypt.c(139) : warning C4996: '_snprintf': This function or variable
 may be unsafe. Consider using _snprintf_s instead. To disable deprecation, use
_CRT_SECURE_NO_WARNINGS. See online help for details.
            C:UsersBrandonAppDataLocalProgramsCommonMicrosoftVisual C++
for Python9.0VCIncludestdio.h(358) : see declaration of '_snprintf'
    bcrypt/bcrypt.c(249) : warning C4996: '_snprintf': This function or variable
 may be unsafe. Consider using _snprintf_s instead. To disable deprecation, use
_CRT_SECURE_NO_WARNINGS. See online help for details.
            C:UsersBrandonAppDataLocalProgramsCommonMicrosoftVisual C++
for Python9.0VCIncludestdio.h(358) : see declaration of '_snprintf'
    C:UsersBrandonAppDataLocalProgramsCommonMicrosoftVisual C++ for Pyth
on9.0VCBincl.exe /c /nologo /Ox /MD /W3 /GS- /DNDEBUG -IC:Python27include
-IC:Python27Scriptsvenv_flaskPC /Tcbcrypt/bcrypt_pbkdf.c /Fobuildtemp.win32
-2.7Releasebcrypt/bcrypt_pbkdf.obj
    bcrypt_pbkdf.c
    C:UsersBrandonAppDataLocalProgramsCommonMicrosoftVisual C++ for Pyth
on9.0VCBincl.exe /c /nologo /Ox /MD /W3 /GS- /DNDEBUG -IC:Python27include
-IC:Python27Scriptsvenv_flaskPC /Tcbcrypt/bcrypt_python.c /Fobuildtemp.win3
2-2.7Releasebcrypt/bcrypt_python.obj
    bcrypt_python.c
    bcrypt/bcrypt_python.c(63) : warning C4244: 'function' : conversion from 'lo
ng' to 'u_int8_t', possible loss of data
    C:UsersBrandonAppDataLocalProgramsCommonMicrosoftVisual C++ for Pyth
on9.0VCBincl.exe /c /nologo /Ox /MD /W3 /GS- /DNDEBUG -IC:Python27include
-IC:Python27Scriptsvenv_flaskPC /Tcbcrypt/blowfish.c /Fobuildtemp.win32-2.7
Releasebcrypt/blowfish.obj
    blowfish.c
    c:usersbrandonappdatalocaltemppip-build-czloyhpy-bcryptbcryptpybc_b
lf.h(86) : error C2146: syntax error : missing ')' before identifier 'passlen'
    c:usersbrandonappdatalocaltemppip-build-czloyhpy-bcryptbcryptpybc_b
lf.h(86) : error C2081: 'size_t' : name in formal parameter list illegal
    c:usersbrandonappdatalocaltemppip-build-czloyhpy-bcryptbcryptpybc_b
lf.h(86) : error C2061: syntax error : identifier 'passlen'
    c:usersbrandonappdatalocaltemppip-build-czloyhpy-bcryptbcryptpybc_b
lf.h(86) : error C2059: syntax error : ';'
    c:usersbrandonappdatalocaltemppip-build-czloyhpy-bcryptbcryptpybc_b
lf.h(86) : error C2059: syntax error : ','
    c:usersbrandonappdatalocaltemppip-build-czloyhpy-bcryptbcryptpybc_b
lf.h(88) : error C2059: syntax error : ')'
    c:usersbrandonappdatalocaltemppip-build-czloyhpy-bcryptbcryptpybc_b
lf.h(91) : error C2146: syntax error : missing ')' before identifier 'n'
    c:usersbrandonappdatalocaltemppip-build-czloyhpy-bcryptbcryptpybc_b
lf.h(91) : error C2081: 'size_t' : name in formal parameter list illegal
    c:usersbrandonappdatalocaltemppip-build-czloyhpy-bcryptbcryptpybc_b
lf.h(91) : error C2061: syntax error : identifier 'n'
    c:usersbrandonappdatalocaltemppip-build-czloyhpy-bcryptbcryptpybc_b
lf.h(91) : error C2059: syntax error : ';'
    c:usersbrandonappdatalocaltemppip-build-czloyhpy-bcryptbcryptpybc_b
lf.h(91) : error C2059: syntax error : ')'
    error: command 'C:\Users\Brandon\AppData\Local\Programs\Common\Micros
oft\Visual C++ for Python\9.0\VC\Bin\cl.exe' failed with exit status 2

我不想冒险漏掉任何东西。然而，我认为这个错误消息的关键部分是这一部分:

    bcrypt/bcrypt.c(139) : warning C4996: '_snprintf': This function or variable
 may be unsafe. Consider using _snprintf_s instead. To disable deprecation, use
_CRT_SECURE_NO_WARNINGS. See online help for details.

我相信微软的Visual Basic有问题。然而，当我在网上查的时候，我没有得到任何好的答案。我正在使用Microsoft Visual Basic c++的Python 2.7编译器

我在网上没有看到任何其他问题似乎可以解决我的问题。有些很接近，但它们似乎提供的解决方案与我的问题无关(引用我不使用/拥有的文件等)

Answer 1

你只需要为你的python版本安装python-dev。

Answer 2

这是Microsoft Visual Studio的一个问题，现在似乎已经修复了。