QGIS中安装Python第三方库

在QGIS自带的python中安装第三方库

如果安装了QGIS,在所有程序中搜OSGeo4W Shell，以管理员身份打开，可以安装第三方库

环境设置

错误尝试：

直接安装，不是QGIS中的python
切换路径，再次尝试，还是不对

C:\> python3 -m pip install --upgrade pip
Requirement already up-to-date: pip in d:\anaconda3\lib\site-packages (20.1.1)
C:\>cd /d D:\QGIS 3.12\apps\Python37
D:\QGIS 3.12\apps\Python37> python3 -m pip install --upgrade pip
Requirement already up-to-date: pip in d:\anaconda3\lib\site-packages (20.1.1)

正确方法（适用于3.18之前版本）：

D:\QGIS 3.12\apps\Python37>py3_env.batD:\QGIS 3.12\apps\Python37>SET PYTHONHOME=D:\QGIS3~1.12\apps\Python37D:\QGIS 3.12\apps\Python37>SET PYTHONPATH=D:\QGIS3~1.12\apps\Python37;D:\QGIS3~1.12\apps\Python37\ScriptsD:\QGIS 3.12\apps\Python37>PATH D:\QGIS3~1.12\apps\Python37;D:\QGIS3~1.12\apps\Python37\Scripts;D:\QGIS3~1.12\bin;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\system32\WBem

注意：使用3.20版本以上需要，设置一下环境变量即可安装python包

C:\OSGeo4W>o4w_env

更新一下pip包

D:\QGIS 3.12\apps\Python37> python3 -m pip install --upgrade pip
Collecting pipDownloading pip-20.1.1-py2.py3-none-any.whl (1.5 MB)|████████████████████████████████| 1.5 MB 819 kB/s
Installing collected packages: pipAttempting uninstall: pipFound existing installation: pip 20.0.2Uninstalling pip-20.0.2:Successfully uninstalled pip-20.0.2
Successfully installed pip-20.1.1

查看一下包

D:\QGIS 3.12\apps\Python37>pip list
Package          Version
---------------- ----------
certifi          2019.11.28
chardet          3.0.4
coverage         4.5.1
cycler           0.10.0
decorator        4.4.1
ExifRead         2.1.2
future           0.16.0
GDAL             3.0.4
geographiclib    1.50
httplib2         0.11.3
idna             2.8
ipython-genutils 0.2.0
Jinja2           2.11.1
jsonschema       2.6.0
jupyter-core     4.4.0
kiwisolver       1.1.0
lxml             4.3.3
MarkupSafe       1.1.1
matplotlib       3.1.3
mock             2.0.0
nbformat         4.4.0
networkx         2.2
nose2            0.8.0
numpy            1.18.3
OWSLib           0.17.0
pandas           1.0.1
pbr              4.3.0
Pillow           5.3.0
pip              20.1.1
plotly           3.3.0
ply              3.11
psycopg2-binary  2.8.4
Pygments         2.5.2
pyodbc           4.0.24
PyOpenGL         3.1.0
pyparsing        2.4.6
pypiwin32        223
pyproj           2.5.0
PyQt5            5.11.3
pyqt5-tools      5.13.0.1.5
python-dateutil  2.8.1
python-dotenv    0.10.3
pytz             2019.3
pywin32          224
PyYAML           5.3
requests         2.22.0
retrying         1.3.3
scipy            1.4.1
setuptools       45.2.0
Shapely          1.7.0
simplejson       3.16.0
sip              4.19.14
six              1.14.0
traitlets        4.3.3
urllib3          1.25.8
wxPython         4.0.7
xlrd             1.1.0
xlwt             1.3.0

安装个图像包

安装个图像包scikit-image==0.16.1表示库名+版本号，可以自行更改成其他的

python3 -m pip install scikit-image==0.16.1 --user

示例：

D:\QGIS 3.12\apps\Python37> python3 -m pip install scikit-image==0.16.1 --user
Collecting scikit-image==0.16.1Downloading scikit_image-0.16.1-cp37-cp37m-win_amd64.whl (25.7 MB)|████████████████████████████████| 25.7 MB 392 kB/s
Requirement already satisfied: pillow>=4.3.0 in d:\qgis3~1.12\apps\python37\lib\site-packages (from scikit-image==0.16.1) (5.3.0)
Collecting imageio>=2.3.0Downloading imageio-2.8.0-py3-none-any.whl (3.3 MB)|████████████████████████████████| 3.3 MB 3.3 MB/s
Requirement already satisfied: networkx>=2.0 in d:\qgis3~1.12\apps\python37\lib\site-packages (from scikit-image==0.16.1) (2.2)
Requirement already satisfied: matplotlib!=3.0.0,>=2.0.0 in d:\qgis3~1.12\apps\python37\lib\site-packages (from scikit-image==0.16.1) (3.1.3)
Collecting PyWavelets>=0.4.0Downloading PyWavelets-1.1.1-cp37-cp37m-win_amd64.whl (4.2 MB)|████████████████████████████████| 4.2 MB 3.3 MB/s
Requirement already satisfied: scipy>=0.19.0 in d:\qgis3~1.12\apps\python37\lib\site-packages (from scikit-image==0.16.1) (1.4.1)
Requirement already satisfied: numpy in d:\qgis3~1.12\apps\python37\lib\site-packages (from imageio>=2.3.0->scikit-image==0.16.1) (1.18.3)
Requirement already satisfied: decorator>=4.3.0 in d:\qgis3~1.12\apps\python37\lib\site-packages (from networkx>=2.0->scikit-image==0.16.1) (4.4.1)
Requirement already satisfied: kiwisolver>=1.0.1 in d:\qgis3~1.12\apps\python37\lib\site-packages (from matplotlib!=3.0.0,>=2.0.0->scikit-image==0.16.1) (1.1.0)
Requirement already satisfied: cycler>=0.10 in d:\qgis3~1.12\apps\python37\lib\site-packages (from matplotlib!=3.0.0,>=2.0.0->scikit-image==0.16.1) (0.10.0)
Requirement already satisfied: pyparsing!=2.0.4,!=2.1.2,!=2.1.6,>=2.0.1 in d:\qgis3~1.12\apps\python37\lib\site-packages (from matplotlib!=3.0.0,>=2.0.0->scikit-image==0.16.1) (2.4.6)
Requirement already satisfied: python-dateutil>=2.1 in d:\qgis3~1.12\apps\python37\lib\site-packages (from matplotlib!=3.0.0,>=2.0.0->scikit-image==0.16.1) (2.8.1)
Requirement already satisfied: setuptools in d:\qgis3~1.12\apps\python37\lib\site-packages (from kiwisolver>=1.0.1->matplotlib!=3.0.0,>=2.0.0->scikit-image==0.16.1) (45.2.0)
Requirement already satisfied: six in d:\qgis3~1.12\apps\python37\lib\site-packages (from cycler>=0.10->matplotlib!=3.0.0,>=2.0.0->scikit-image==0.16.1) (1.14.0)
Installing collected packages: imageio, PyWavelets, scikit-imageWARNING: The scripts imageio_download_bin.exe and imageio_remove_bin.exe are installed in 'C:\Users\67231\AppData\Roaming\Python\Python37\Scripts' which is not on PATH.Consider adding this directory to PATH or, if you prefer to suppress this warning, use --no-warn-script-location.WARNING: The script skivi.exe is installed in 'C:\Users\67231\AppData\Roaming\Python\Python37\Scripts' which is not on PATH.Consider adding this directory to PATH or, if you prefer to suppress this warning, use --no-warn-script-location.
Successfully installed PyWavelets-1.1.1 imageio-2.8.0 scikit-image-0.16.1

进入qgis中的python下测试

import skimage
skimage.__version__
'0.16.1'

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QGIS中安装Python第三方库

在QGIS自带的python中安装第三方库

环境设置

更新一下pip包

查看一下包

安装个图像包

进入qgis中的python下测试

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