Question

我安装烧瓶pipenv，但不能导入该包。

蟒3.6.8，2018年11月26日pipenv

$ pipenv install flask
Installing flask…
Adding flask to Pipfile's [packages]…
Installing dependencies from Pipfile.lock (a18377)…
✔ Installation Succeeded 
     ▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉ 29/29 — 00:00:0603
(env) $ python -c 'import flask'
Traceback (most recent call last):
  File "<string>", line 1, in <module>
ModuleNotFoundError: No module named 'flask'

，但看起来像烧瓶安装：

(env) $ flask --help
Traceback (most recent call last):
  File ".../.virtualenvs/env-vop2XA0b/lib/python3.6/site-packages/flask/cli.py", line 529, in list_commands
    rv.update(info.load_app().cli.list_commands(ctx))
  File ".../virtualenvs/env-vop2XA0b/lib/python3.6/site-packages/flask/cli.py", line 384, in load_app
    'Could not locate a Flask application. You did not provide '
flask.cli.NoAppException: Could not locate a Flask application. You did not provide the "FLASK_APP" environment variable, and a "wsgi.py" or "app.py" module was not found in the current directory.
Usage: flask [OPTIONS] COMMAND [ARGS]...

  A general utility script for Flask applications.

  Provides commands from Flask, extensions, and the application. Loads the
  application defined in the FLASK_APP environment variable, or from a
  wsgi.py file. Setting the FLASK_ENV environment variable to 'development'
  will enable debug mode.

    $ export FLASK_APP=hello.py
    $ export FLASK_ENV=development
    $ flask run

Options:
  --version  Show the flask version
  --help     Show this message and exit.

Commands:
  routes  Show the routes for the app.
  run     Runs a development server.
  shell   Runs a shell in the app context.

和

(env) $ which flask
path/to/.virtualenvs/env-vop2XA0b/bin/flask

我与virtualenv的行为相同

这是怎么回事呢？

Answer 1

它看起来像您使用pipenv安装包，但是，你必须加入pipenv创建的虚拟环境，实际使用安装的软件包。

首先，使用安装包pipenv install flask

现在，您有两个选择可以在安装了flask的虚拟环境中运行任何内容。

pipenv run flask - 这将直接运行烧瓶命令，而不需要你到源虚拟环境
pipenv shell和python -c 'import flask' - 这将工作完全一样虚拟环境中，通过获取所述虚拟环境，然后使用它的运行蟒

Python包安装在pipenv但没有模块FOUND说

1 个答案: