I have a trouble with recipe "Creating a QGIS Plugin" from QGIS Python Cookbook by Joel Lawhead. I use QGIS 2.18, Plugin Builder and OSGeo4W Shell. I can't walk through this step:
Compile the ui file using the pyuic4 tool:
pyuic4 -o ui_myplugin.py ui_myplugin.ui
OSGeo4W Shell displays an error:
No such file or directory: "ui_myplugin.ui"
What is the cause?