ModuleNotFoundError: No module named 'pandas' 尝试了从互联网上找到的所有内容

如何解决ModuleNotFoundError: No module named 'pandas' 尝试了从互联网上找到的所有内容

一旦我在 py 文件中运行代码，例如

a.py 及其内部： 将熊猫导入为 pd ......其他代码

然后运行它：

gunicorn main:app -b 0.0.0.0:7000

它因这个错误而崩溃：

$ gunicorn main:app -b 0.0.0.0:7000
[2021-06-29 23:51:28 +0000] [302255] [INFO] Starting gunicorn 20.0.2
[2021-06-29 23:51:28 +0000] [302255] [INFO] Listening at: http://0.0.0.0:7000 (302255)
[2021-06-29 23:51:28 +0000] [302255] [INFO] Using worker: sync
[2021-06-29 23:51:28 +0000] [302260] [INFO] Booting worker with pid: 302260
[2021-06-29 23:51:28 +0000] [302260] [ERROR] Exception in worker process
Traceback (most recent call last):
  File "/home/ubuntu/.local/lib/python3.8/site-packages/gunicorn/arbiter.py",line 583,in spawn_worker
    worker.init_process()
  File "/home/ubuntu/.local/lib/python3.8/site-packages/gunicorn/workers/base.py",line 119,in init_process
    self.load_wsgi()
  File "/home/ubuntu/.local/lib/python3.8/site-packages/gunicorn/workers/base.py",line 144,in load_wsgi
    self.wsgi = self.app.wsgi()
  File "/home/ubuntu/.local/lib/python3.8/site-packages/gunicorn/app/base.py",line 66,in wsgi
    self.callable = self.load()
  File "/home/ubuntu/.local/lib/python3.8/site-packages/gunicorn/app/wsgiapp.py",line 49,in load
    return self.load_wsgiapp()
  File "/home/ubuntu/.local/lib/python3.8/site-packages/gunicorn/app/wsgiapp.py",line 39,in load_wsgiapp
    return util.import_app(self.app_uri)
  File "/home/ubuntu/.local/lib/python3.8/site-packages/gunicorn/util.py",line 358,in import_app
    mod = importlib.import_module(module)
  File "/usr/lib/python3.8/importlib/__init__.py",line 127,in import_module
    return _bootstrap._gcd_import(name[level:],package,level)
  File "<frozen importlib._bootstrap>",line 1014,in _gcd_import
  File "<frozen importlib._bootstrap>",line 991,in _find_and_load
  File "<frozen importlib._bootstrap>",line 975,in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>",line 671,in _load_unlocked
  File "<frozen importlib._bootstrap_external>",line 783,in exec_module
  File "<frozen importlib._bootstrap>",line 219,in _call_with_frames_removed
  File "/home/ubuntu/api/main.py",line 5,in <module>
    from answor import Answor
  File "/home/ubuntu/api/answor.py",line 2,in <module>
    import pandas as pd
ModuleNotFoundError: No module named 'pandas'
[2021-06-29 23:51:28 +0000] [302260] [INFO] Worker exiting (pid: 302260)
[2021-06-29 23:51:28 +0000] [302255] [INFO] Shutting down: Master
[2021-06-29 23:51:28 +0000] [302255] [INFO] Reason: Worker failed to boot.

但是如果我从终端运行导入代码，它会起作用：

~$ python
Python 3.8.5 (default,Sep  4 2020,07:30:14) 
[GCC 7.3.0] :: Anaconda,Inc. on linux
Type "help","copyright","credits" or "license" for more information.
>>> import pandas as pd
>>> a = pd.DataFrame([1,2,3])
>>> a
   0
0  1
1  2
2  3
>>> 

使用 conda 安装 pandas

conda install -n base pandas

然后：

conda list

我可以看到熊猫

pandas                    1.2.5                    pypi_0    pypi

错误仍然存​​在。

所以卸载并重新安装（只是熊猫）：

conda uninstall --force pandas
conda install pandas

我当前的 conda env 是 (base)，这是预期的。

然后我运行了这个：

$ pip show pandas
Name: pandas
Version: 1.2.5
Summary: Powerful data structures for data analysis,time series,and statistics
Home-page: https://pandas.pydata.org
Author: None
Author-email: None
License: BSD
Location: /home/ubuntu/miniconda3/lib/python3.8/site-packages
Requires: pytz,python-dateutil,numpy
Required-by: fastai

并且我可以找到 2 个与 Pandas 相关的文件夹

pandas 和 pandas-1.2.5.dist-info

所以我检查了python在哪里

~$ which python
/home/ubuntu/miniconda3/bin/python

还跑了：

pip freeze 和 pip3 freeze

我可以在任何地方pandas。

我也跑步

pip install pandas
pip3 install pandas

问题仍然存在。

我不想卸载所有东西，因为有另一个应用程序正在运行。

有什么想法吗？

---

更新 1

要查看 gunicorn 的安装位置：

~$ 哪个 gunicorn /home/ubuntu/.local/bin/gunicorn

我确实在第 1 位注意到了这一点，因此跑了：

~$ conda install -n base gunicorn
Collecting package metadata (current_repodata.json): done
Solving environment: | 
The environment is inconsistent,please check the package plan carefully
The following packages are causing the inconsistency:

  - fastchan/noarch::fastai==2.4=py_0
done

## Package Plan ##

  environment location: /home/ubuntu/miniconda3

  added / updated specs:
    - gunicorn


The following NEW packages will be INSTALLED:

  pandas             pkgs/main/linux-64::pandas-1.2.5-py38h295c915_0


Proceed ([y]/n)? y

Preparing transaction: done
Verifying transaction: done
Executing transaction: done

这次我发现了一个不同之处，那就是它还安装了pandas :)

在 conda 下为 gunicorn 运行此安装后，我运行了

$ which gunicorn
/home/ubuntu/.local/bin/gunicorn

但它仍然显示旧路径。

然后我运行了以下命令：

$ python -m pip install pandas gunicorn
Requirement already satisfied: pandas in /home/ubuntu/miniconda3/lib/python3.8/site-packages (1.2.5)
Requirement already satisfied: gunicorn in /home/ubuntu/.local/lib/python3.8/site-packages (20.0.2)
Requirement already satisfied: python-dateutil>=2.7.3 in /home/ubuntu/.local/lib/python3.8/site-packages (from pandas) (2.8.1)
Requirement already satisfied: pytz>=2017.3 in /home/ubuntu/miniconda3/lib/python3.8/site-packages (from pandas) (2021.1)
Requirement already satisfied: numpy>=1.16.5 in /home/ubuntu/.local/lib/python3.8/site-packages (from pandas) (1.20.3)
Requirement already satisfied: six>=1.5 in /home/ubuntu/miniconda3/lib/python3.8/site-packages (from python-dateutil>=2.7.3->pandas) (1.16.0)
Requirement already satisfied: setuptools>=3.0 in /home/ubuntu/miniconda3/lib/python3.8/site-packages (from gunicorn) (52.0.0.post20210125)

但不幸的是，我再次尝试使用 gunicorn 运行我的应用，问题仍然存在。

解决方法

从您的基本 conda 环境中，尝试：

# Install packages
python -m pip install pandas
python -m pip install gunicorn

# Run the program
python -m gunicorn main:app -b 0.0.0.0:7000

如果这不起作用，请尝试像这样创建一个新的 conda 环境，然后运行上面的安装步骤。

# Replace myenv with any name
conda create -n myenv python