[Python] Pyinstaller "returned -1"

I know this question has been asked many times before, but after browsing the answers, I cannot seem to figure out what is going wrong.

I have a python script (below) and I am trying to use Pyinstaller to make it into an executable file (I am on windows).

When I am in the directory of my Plot.py file, I type into the command prompt:

pyinstaller.exe --onefile --windowed Plot.py


It then successfully creates the exe file, but when I attempt to open it, a window pops up titled "Fatal Error!" that says "Plot returned -1".

I have made executables before using Pyinstaller from python scripts using Tkinter and tkFileDialog. From what I have researched, Pyinstaller supports matplotlib.

Any ideas what is going wrong?

Plot.py is below:

'''
Plot.py
Opens a GUI and allows users to select text files with five columns: x, y, z, t, e
Then, it makes two graphs and shows them - x vs y vs z and e vs t
'''

from mpl_toolkits.mplot3d import Axes3D
import matplotlib.pyplot as plt
import tkFileDialog
from Tkinter import *

def get_name_from_file(path):
'''
takes a path and returns just the name of the file
i.e. C:/Users/joe.iosue/Documents/helloworld.txt returns helloworld.txt
'''
while path.count("/") > 0:
i = path.index("/")
path = path[i+1:]
return path

def make_plot(x, y, z, title):
'''
returns a plt object that can be saved to show later
x, y, z are lists of floats, but the 0th index is a string: the title of that axes.
title is a string
'''
fig = plt.figure()
#If there is no z list, the graph should only be 2d (energy vs time)
if z != None:
plot = fig.add_subplot(111, projection='3d')
plot.set_zlabel(z[0])
plot.scatter(x[1:], y[1:], z[1:], c='r', marker='o')
plot.set_xlabel(x[0])
plot.set_ylabel(y[0])
plot.set_zlabel(z[0])
else:
plt.plot(x[1:], y[1:], c='r', marker='o')
plt.xlabel(x[0])
plt.ylabel(y[0])
plt.title(title)
return plt

class Graph(object):
'''
Reads from a file that has 5 columns: x, y, z, t, KE
There are two graphs: a position graph (x, y, z)
and a Kinetic energy vs Time graph (t, KE)
'''
def __init__(self, filename, xlabel='X', ylabel='Y', zlabel='Z', tlabel='t', elabel='KE', title='Title'):
self.title = title
f = open(filename, 'r')
data = f.readlines()
f.close()
#first index of the lists are what I am going to name the axes
self.xList, self.yList, self.zList, self.tList, self.eList = [xlabel], [ylabel], [zlabel], [tlabel], [elabel]
lines = []
for element in data:
lines.append(element.split())
for element in lines:
#In case I decide later to add comments in my text file with the points
#I added this try statement so it won't add a comment to the point lists
try:
self.xList.append(float(element[0]))
self.yList.append(float(element[1]))
self.zList.append(float(element[2]))
self.tList.append(float(element[3]))
self.eList.append(float(element[4]))
except:
pass
def plot_position(self):
make_plot(self.xList, self.yList, self.zList, self.title).show()
def plot_energy(self):
make_plot(self.tList, self.eList, None, self.title).show()
def plot_both(self):
'''
matplotlib works in global frame, so this makes both plots
(x vs y vx z and ke vs t) in global frame and then shows both
at the same time
'''
make_plot(self.xList, self.yList, self.zList, self.title)
make_plot(self.tList, self.eList, None, self.title).show()

class OpenDialogMenu(object):
'''
opens file menu only allowing text files to be chosen
'''
def __init__(self, master):
self.master = master
self.file_options = options = {}
options['defaultextension'] = '.txt'
options['filetypes'] = [('TXT files', '.txt')]
options['initialdir'] = 'C:\Documents'
options['parent'] = self.master
options['title'] = 'Open File Menu'
self.filename = tkFileDialog.askopenfile(mode="r", **self.file_options)
def get_filename(self):
'''
If user opens file menu and then closes it without picking
a file, should return None
'''
try:
return self.filename.name
except:
return None

class Home(object):
'''
master is a Tk window
Home can store multiple text files ready to plot
'''
def __init__(self, master):
self.master = master
self.master.title('Plot')
# In case the icon file is not in the correct directory
try:
self.master.wm_iconbitmap("ploticon.ico")
except:
pass
self.open= Button(self.master, text='Open', command=self.Open, width=10)
self.plot = Button(self.master, text='Plot', command=self.Plot, width=10)
self.plot.grid(row=0, column=0)
self.open.grid(row=0, column=1)
self.row = 1
self.files, self.labels = [], []

self.menubar = Menu(self.master)
self.filemenu = Menu(self.menubar, tearoff=0)
self.menubar.add_cascade(label="File", menu=self.filemenu)
self.filemenu.add_command(label="New", command=self.New)
self.filemenu.add_command(label="Open", command=self.Open)
self.filemenu.add_command(label="Reset", command=self.delete_files)
self.filemenu.add_separator()
self.filemenu.add_command(label="Exit", command=self.master.destroy)
self.master.config(menu=self.menubar)

self.master.bind('<Control-o>', self.Open)
self.master.bind('<Return>', self.Plot)
self.master.bind('<Control-n>', self.New)
self.master.bind('<Control-r>', self.delete_files)

def Open(self, callback=False):
'''
opens the open dialog menu and adds the chosen file to self.files
and adds a label to the window with name of file
'''
f = OpenDialogMenu(self.master)
self.filename = f.get_filename()
if self.filename != None:
name = get_name_from_file(self.filename)
self.labels.append(Label(self.master, text=name))
self.labels[len(self.labels)-1].grid(row=self.row, columnspan=50)
self.row+=1
self.files.append(Graph(filename=self.filename, title=name))

def Plot(self, callback=False):
'''
plots plt objects
'''
for element in self.files:
element.plot_both()

def New(self, callback=False):
'''
opens new tkinter window with Home attributes
'''
root = Tk()
Home(root)
root.mainloop()

def delete_files(self, callback=False):
'''
removes all files from file and label list
'''
for element in self.labels:
element.destroy()
self.labels = []
self.files = []

if __name__ == '__main__':
root = Tk()
Home(root)
root.mainloop()


I should mention, the py file works.

I know the code is a bit contrived, but it works exactly how I want it to work for what I need it to do.

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