[英]Python3 module importing
美好的一天! 我有下一個項目結構:
config.json
tests/
-test_tcp.py
test_tools/
-include_proto.py
在我的“ test_tcp.py”文件中,有以下代碼:
#! /usr/bin/python3
from google.protobuf import text_format
from test_tools import include_proto # the problem is here
import test_tools.temp_proto.timeline_api_pb2 as timeline_proto
import socket
...
然后,我嘗試使用下一個命令開始測試: python3 tests/test_tcp.py
(我也嘗試調用pytest .
命令,但我認為在這種情況下它沒有任何價值)。 所以,我有預期的錯誤ImportError: No module named 'test_tools'
。 我已經閱讀了文檔“ man python3”,並找到了下一個:
PYTHONPATH
Augments the default search path for module files. The format is the same as the
shell's $PATH: one or more directory pathnames separated by colons. Non-existent
directories are silently ignored. The default search path is installation depen‐
dent, but generally begins with ${prefix}/lib/python<version> (see PYTHONHOME
above). The default search path is always appended to $PYTHONPATH. If a script
argument is given, the directory containing the script is inserted in the path in
front of $PYTHONPATH. The search path can be manipulated from within a Python pro‐
gram as the variable sys.path.
因此,我用根測試項目目錄通過命令PYTHONPATH=$(pwd)
設置了PYTHONPATH
。 但是,我仍然有相同的錯誤。
怎么了? 對於這種情況,是否存在任何良好做法?
在您的test_tools文件夾中添加一個空的__init__.py
文件,以使python知道它是一個模塊。
有關Python模塊的更多知識,請閱讀這篇文章的文檔。
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