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pycrypto安装

1. 首先升级你的pip

python -m pip install --upgrade pip

安装失败的情况及解决

情况1. 安装成功，但用不了 这种情况首先选择升级你的pip版本，然后卸载掉pycrypto，再重新安装，也就是终端执行下面几个命令：

# 1. 升级pip版本
python -m pip install --upgrade pip

# 2. 卸载掉之前的pycrypto
pip uninstall pycrypto -y

# 3. 再重新安装pycrypto
pip install pycrypto

情况2. 也升级了pip版本，然后重新安装之后，也是用不了 这么着你就找到pycrypto的安装目录，一般在你的Python解释器的安装目录下的lib/site-packages中找到pycrypto这个包(文件夹)，将该包名由：

crypto --> Crypto

pycryptodome安装

1. 首先升级你的pip

python -m pip install --upgrade pip

安装失败的情况及解决

情况1. 安装成功，但用不了 这种情况首先选择升级你的pip版本，然后卸载掉pycryptodome，再重新安装，也就是终端执行下面几个命令：

# 1. 升级pip版本
python -m pip install --upgrade pip

# 2. 卸载掉之前的pycryptodome
pip uninstall pycryptodome -y

# 3. 再重新安装pycryptodome
pip install pycryptodome

cryptography

pip._vendor.pytoml.core.TomlError:

python3.8 + pip.18

现象是pip安装该模块报错:

(venv) F:\PycharmProjects\register>pip install cryptography
Collecting cryptography
  Using cached https://files.pythonhosted.org/packages/de/ba/0664727028b37e249e73879348cc46d45c5c1a2a2e81e8166462953c5755/cryptography-43.0.1.tar.gz
Exception:
Traceback (most recent call last):
  File "F:\PycharmProjects\register\venv\lib\site-packages\pip-19.0.3-py3.8.egg\pip\_internal\cli\base_command.py", line 179, in main
    status = self.run(options, args)
  File "F:\PycharmProjects\register\venv\lib\site-packages\pip-19.0.3-py3.8.egg\pip\_internal\commands\install.py", line 315, in run
    resolver.resolve(requirement_set)
  File "F:\PycharmProjects\register\venv\lib\site-packages\pip-19.0.3-py3.8.egg\pip\_internal\resolve.py", line 131, in resolve
    self._resolve_one(requirement_set, req)
  File "F:\PycharmProjects\register\venv\lib\site-packages\pip-19.0.3-py3.8.egg\pip\_internal\resolve.py", line 294, in _resolve_one
    abstract_dist = self._get_abstract_dist_for(req_to_install)
  File "F:\PycharmProjects\register\venv\lib\site-packages\pip-19.0.3-py3.8.egg\pip\_internal\resolve.py", line 240, in _get_abstract_dist_for
    abstract_dist = self.preparer.prepare_linked_requirement(
  File "F:\PycharmProjects\register\venv\lib\site-packages\pip-19.0.3-py3.8.egg\pip\_internal\operations\prepare.py", line 349, in prepare_linked_requirement
    abstract_dist.prep_for_dist(finder, self.build_isolation)
  File "F:\PycharmProjects\register\venv\lib\site-packages\pip-19.0.3-py3.8.egg\pip\_internal\operations\prepare.py", line 109, in prep_for_dist
    self.req.load_pyproject_toml()
  File "F:\PycharmProjects\register\venv\lib\site-packages\pip-19.0.3-py3.8.egg\pip\_internal\req\req_install.py", line 485, in load_pyproject_toml
    pep517_data = load_pyproject_toml(
  File "F:\PycharmProjects\register\venv\lib\site-packages\pip-19.0.3-py3.8.egg\pip\_internal\pyproject.py", line 66, in load_pyproject_toml
    pp_toml = pytoml.load(f)
  File "F:\PycharmProjects\register\venv\lib\site-packages\pip-19.0.3-py3.8.egg\pip\_vendor\pytoml\parser.py", line 11, in load
    return loads(fin.read(), translate=translate, object_pairs_hook=object_pairs_hook, filename=getattr(fin, 'name', repr(fin)))
  File "F:\PycharmProjects\register\venv\lib\site-packages\pip-19.0.3-py3.8.egg\pip\_vendor\pytoml\parser.py", line 24, in loads
    ast = _p_toml(src, object_pairs_hook=object_pairs_hook)
  File "F:\PycharmProjects\register\venv\lib\site-packages\pip-19.0.3-py3.8.egg\pip\_vendor\pytoml\parser.py", line 340, in _p_toml
    s.expect_eof()
  File "F:\PycharmProjects\register\venv\lib\site-packages\pip-19.0.3-py3.8.egg\pip\_vendor\pytoml\parser.py", line 125, in expect_eof
    return self._expect(self.consume_eof())
  File "F:\PycharmProjects\register\venv\lib\site-packages\pip-19.0.3-py3.8.egg\pip\_vendor\pytoml\parser.py", line 165, in _expect
    raise TomlError('msg', self._pos[0], self._pos[1], self._filename)
pip._vendor.pytoml.core.TomlError: C:\Users\Administrator\AppData\Local\Temp\pip-install-0uq5kq6d\cryptography\pyproject.toml(172, 1): msg

问题原因是pip版本过低导致的,解决方案就是升级pip版本之后再重装即可.

python -m pip install -U pip
pip install cryptography