pip安装后没有名为imutils.perspective的模块

Question

我试图遵循本教程，这需要imtools。看起来我已经安装了包，但是Python编译器找不到它。这里发生了什么事？

教程：http://www.pyimagesearch.com/2016/10/03/bubble-sheet-multiple-choice-scanner-and-test-grader-using-omr-python-and-opencv/

~/py:. cat test_grader.py
from imutils.perspective import four_point_transform~

~/py:. python test_grader.py
Traceback (most recent call last):
  File "test_grader.py", line 1, in <module>
    from imutils.perspective import four_point_transform
ImportError: No module named imutils.perspective

~/py:pip install imtools
Requirement already satisfied: imtools in /usr/local/lib/python2.7/site-packages
Requirement already satisfied: matplotlib in /usr/local/lib/python2.7/site-packages (from imtools)
Requirement already satisfied: pyyaml in /usr/local/lib/python2.7/site-packages (from imtools)
Requirement already satisfied: numpy in /usr/local/lib/python2.7/site-packages (from imtools)
Requirement already satisfied: scipy in /usr/local/lib/python2.7/site-packages (from imtools)
Requirement already satisfied: python-dateutil in /usr/local/lib/python2.7/site-packages (from matplotlib->imtools)
Requirement already satisfied: pyparsing!=2.0.0,!=2.0.4,>=1.5.6 in /usr/local/lib/python2.7/site-packages (from matplotlib->imtools)
Requirement already satisfied: cycler in /usr/local/lib/python2.7/site-packages (from matplotlib->imtools)
Requirement already satisfied: pytz in /usr/local/lib/python2.7/site-packages (from matplotlib->imtools)
Requirement already satisfied: six>=1.5 in /usr/local/lib/python2.7/site-packages (from python-dateutil->matplotlib->imtools)
~/py:.

Answer 1

好像你刚安装了错误的软件包。本教程说您需要imutils，但是您安装了imtools。尝试安装imutils：

pip install --upgrade imutils

Answer 2

1)安装imutils

pip install imutils

2)如果已经安装了imutils，请检查安装路径。

Requirement already satisfied: imutils in /usr/local/lib/python3.5/dist-packages

3)当我运行python程序时，遇到了以下错误：

ImportError: No module named imutils.video

在我的例子中，imutils只安装在/usr/local/lib/python3.5/dist-packages路径下，一旦我将这个文件夹复制到/usr/local/lib/python2.7/dist-packages，，它就工作了！希望这会有帮助。

Answer 3

试试sudo pip2 install imutils

我用sudo pip2 install imutils解决了树莓Pi 3B中的这个问题