Python 导入错误：没有名为 PytQt5 的模块

ImportError: No module named PytQt5

提问by Thu Ra

following are my python, qt and sip versions

以下是我的 python、qt 和 sip 版本

root@thura:~# python -V
Python 2.7.3
root@thura:~# qmake --version
QMake version 3.0
Using Qt version 5.0.2 in /usr/lib/i386-linux-gnu
root@thura:~# sip -V
4.15.3

I tried to import the PyQt5 by following by this

我试图通过以下操作来导入PyQt5这

from PyQt5.QtWidgets import QtGui, QtCore

I got the following error

我收到以下错误

ImportError: No module named PyQt5.QtWidgets

导入错误：没有名为 PyQt5.QtWidgets 的模块

How can I solve this error.

我该如何解决这个错误。

Updated =====================

更新 ======================

When I tried to PyQt4, I got following error.

当我尝试 PyQt4 时，出现以下错误。

from PyQt4.QtCore import pyqtSlot as Slot RuntimeError: the sip module implements API v10.0 to v10.1 but the PyQt4.QtCore module requires API v8.1

from PyQt4.QtCore import pyqtSlot as Slot RuntimeError: the sip module implementations API v10.0 to v10.1 but the PyQt4.QtCore module requires API v8.1

Updated 2013-12-20 ======================================

2013 年 12 月 20 日更新 ======================================

1) download sip-4.15.3.tar.gz from here

2) extract sip-4.15.3.tar.gz

3) copy sip-4.15.3 to /home/thura

4) type "cd /home/thura/sip-4.15.3"

5) type "python configure.py", press enter, follow the instructions (type yes and press enter)

6) type "make", press enter and type "make install", press enter

7) download PyQt-gpl-5.1.1.tar.gz from here

8) extract PyQt-gpl-5.1.1.tar.gz

9) copy PyQt-gpl-5.1.1 folder to /home/thura folder.

10) type "cd /home/thura/PyQt-gpl-5.1.1"

11) type "python configure.py", press enter, following the instructions (type yes and press enter)

12)type "make", press enter and type "make install", press enter

1) 从这里下载 sip-4.15.3.tar.gz

2) 解压 sip-4.15.3.tar.gz

3) 将 sip-4.15.3 复制到 /home/thura

4) 输入“cd /home/thura/sip-4.15.3”

5) 输入“python configure.py”，回车，按照说明操作（输入yes，然后回车）

6）输入“make”，回车，输入“make install”，回车

7) 从这里下载 PyQt-gpl-5.1.1.tar.gz

8) 提取 PyQt-gpl-5.1.1.tar.gz

9) 将 PyQt-gpl-5.1.1 文件夹复制到 /home/thura 文件夹。

10) 输入“cd /home/thura/PyQt-gpl-5.1.1”

11）输入“python configure.py”，按回车，按照说明操作（输入yes然后回车）

12）输入“make”，回车，输入“make install”，回车

update 2013-12-20 =====================

更新 2013-12-20 ======================

After redo it again. I got the following error

重做之后再做。我收到以下错误

make[2]: Entering directory `/home/thura/PyQt/qpy/QtDBus'
make[2]: Nothing to be done for `install'.
make[2]: Leaving directory `/home/thura/PyQt/qpy/QtDBus'
make[1]: Leaving directory `/home/thura/PyQt/qpy'
cd QtCore/ && ( test -e Makefile || /usr/lib/i386-linux-gnu/qt5/bin/qmake /home/thura/PyQt/QtCore/QtCore.pro -o Makefile ) && make -f Makefile install
make[1]: Entering directory `/home/thura/PyQt/QtCore'
g++ -c -pipe -O2 -Wall -W -D_REENTRANT -fPIC -DSIP_PROTECTED_IS_PUBLIC -Dprotected=public -DQT_NO_DEBUG -DQT_PLUGIN -DQT_CORE_LIB -I/usr/share/qt5/mkspecs/linux-g++ -I. -I/usr/local/include/python2.7 -I../qpy/QtCore -I/usr/include/qt5 -I/usr/include/qt5/QtCore -I. -o sipQtCoreQtWindowStates.o sipQtCoreQtWindowStates.cpp
In file included from sipQtCoreQtWindowStates.cpp:24:0:
sipAPIQtCore.h:28:17: fatal error: sip.h: No such file or directory
compilation terminated.
make[1]: *** [sipQtCoreQtWindowStates.o] Error 1
make[1]: Leaving directory `/home/thura/PyQt/QtCore'
make: *** [sub-QtCore-install_subtargets-ordered] Error 2

回答by Dan

This probably means that python doesn't know where PyQt5 is located. To check, go into the interactive terminal and type:

这可能意味着 python 不知道 PyQt5 所在的位置。要检查，请进入交互式终端并键入：

import sys
print sys.path

What you probably need to do is add the directory that contains the PyQt5 module to your PYTHONPATHenvironment variable. If you use bash, here's how:

您可能需要做的是将包含 PyQt5 模块的目录添加到您的PYTHONPATH环境变量中。如果您使用bash，方法如下：

Type the following into your shell, and add it to the end of the file ~/.bashrc

在 shell 中键入以下内容，并将其添加到文件末尾 ~/.bashrc

export PYTHONPATH=/path/to/PyQt5/directory:$PYTHONPATH

where /path/to/PyQt5/directoryis the path to the folder where the PyQt5 library is located.

这里/path/to/PyQt5/directory是通往哪里的PyQt5库所在的文件夹。

回答by Thu Ra

After getting the help from @Blender, @ekhumoro and @Dan, I understand the Linux and Python more than before. Thank you. I got the an idea by @ekhumoro, it is I didn't install PyQt5 correctly. So I delete PyQt5 folder and download again. And redo everything from very start.

在得到@Blender、@ekhumoro 和@Dan 的帮助后，我比以前更了解 Linux 和 Python。谢谢你。我从@ekhumoro 得到了一个想法，是我没有正确安装 PyQt5。所以我删除了 PyQt5 文件夹并重新下载。并从一开始就重做一切。

After redoing, I got the error as my last update at my question. So, when I search at stack, I got the following solution from here

重做后，我收到了错误，这是我对问题的最后一次更新。所以，当我在堆栈中搜索时，我从这里得到了以下解决方案

sudo ln -s /usr/include/python2.7 /usr/local/include/python2.7

And then, I did "sudo make" and "sudo make install" step by step. After "sudo make install", I got the following error. But I ignored it and I created a simple design with qt designer. And I converted it into python file by pyuic5. Everything are going well.

然后，我一步一步地做了“sudo make”和“sudo make install”。“sudo make install”后，出现以下错误。但我忽略了它，我用 qt 设计器创建了一个简单的设计。我通过pyuic5将其转换为python文件。一切进展顺利。

install -m 755 -p /home/thura/PyQt/pyuic5 /usr/bin/
strip /usr/bin/pyuic5
strip:/usr/bin/pyuic5: File format not recognized
make: [install_pyuic5] Error 1 (ignored)

回答by artificerpi

If you are on ubuntu, just install pyqt5 with apt-getcommand:

如果您使用的是 ubuntu，只需使用以下apt-get命令安装 pyqt5 ：

    sudo apt-get install python3-pyqt5   # for python3

or

或者

    sudo apt-get install python-pyqt5    # for python2

However, on Ubuntu 14.04 the python-pyqt5 package is left out [source] and need to be installed manually [source]

但是，在 Ubuntu 14.04 上，python-pyqt5 包被排除在 [ source] 之外，需要手动安装 [ source]

回答by tom

this can be solved under MacOS X by installing pyqt with brew

这可以在 MacOS X 下通过使用 brew 安装 pyqt 来解决

brew install pyqt

回答by Durgesh Kumar

pip install pyqt5for python3 for ubuntu

pip install pyqt5用于 ubuntu 的 python3