No module named when using PyInstaller

Question

I try to compile a Python project under Windows 7 using PyInstaller. The project works fine, there are no issues, however when I try to compile it the result doesn't work. Though I get no warnings during compilation there are many in the warnmain.txt file in the build directory: warnmain.txt

I don't really understand those warnings, for example "no module named numpy.pi" since numpy.pi is no module but a number. I never tried to import numpy.pi. I did import numpy and matplotlib explicitly. In addition I'm using PyQt4. I thought the error might be related to those libraries.

However I was able to compile a simple script which uses numpy succesfully:

import sys from PyQt4 import QtGui, QtCore import numpy as np  class MainWindow(QtGui.QMainWindow):     def __init__(self):         QtGui.QMainWindow.__init__(self)          self.pb = QtGui.QPushButton(str(np.pi), self)  app = QtGui.QApplication(sys.argv) main = MainWindow() main.show() sys.exit(app.exec_()) 

Successfully here means that the created executable file actually showed the desired output. However there is also a warnmain.txt file created which contains exactly the same 'warnings' as the one before. So I guess the fact that compiling my actual project does not give any success is not (or at least not only) related to those warnings. But what else could be the error then? The only output during compilation are 'INFO's and none of the is a negative statement.

I did not specify an additional hook directory but the hooks where down using the default directory as far as I could read from the compile output, e.g. hook-matplotlib was executed. I could not see any hook for numpy neither could I for my small example script but this one worked. I used the following imports in my files (not all in the same but in different ones):

import numpy as np import matplotlib.pyplot as ppl from matplotlib.backends.backend_qt4agg import FigureCanvasQTAgg as FigureCanvas from matplotlib.backends.backend_qt4agg import NavigationToolbar2QTAgg as NavigationToolbar from PyQt4 import QtGui, QtCore import json import sys import numpy # added this one later import matplotlib # added this one later 

Since PyInstaller does not give any errors/warnings I could not figure out if the problem is related to the libraries or if there is something else to be considered.

Answer 1

Had a similar problem with no module named FileDialog. Discovered that with version 3.2, I could use

pyinstaller --hidden-import FileDialog ...

instead of modifying my main script.

Answer 2

Pyinstaller won't see second level imports. So if you import module A, pyinstaller sees this. But any additional module that is imported in A will not be seen.

There is no need to change anything in your python scripts. You can directly add the missing imports to the spec file. Just change the following line:

hiddenimports=[], 

to

hiddenimports=["Tkinter", "FileDialog"],