Failed to load png image driver

[Jyothi M]

Hallo,

I have pzthon file which loads the .diag file and gives me the block diagram. please find the python file code below.

import sys

import os

import random

import string

import hashlib

from blockdiag import parser, builder, drawer

__DIRECTORY = 'C:/Users/'

def main():

    input_file_name = sys.argv[1]

    with open(input_file_name) as file_pointer:

        diag_definition = file_pointer.read()

    file_name = ''.join(random.choice(string.ascii_uppercase + string.digits)

                                      for _ in range(8))

    file_path = os.path.join(__DIRECTORY, "{0}.png".format(file_name))

    tree = parser.parse_string(diag_definition)

    diagram = builder.ScreenNodeBuilder.build(tree)

    draw = drawer.DiagramDraw('PNG', diagram, filename=file_path)

    draw.draw()

    draw.save()

    print(file_path)

This works perfectly fine. I then converted .py file(version 3.3.3) to exe using py2exe (0.9.2.2). Conversion was succesful except that PIL.PngImagePlugin, PIL.Image, PIL.ImageDraw, PIL.ImageGrab, PIL.GifImagePlugin modules are missing. Later i tried testing my exe file, it gives me error that failed to load png image driver. can someone help me on this.

I dont know if its issue with blockdiag or py2exe conversion.

Thanks in advance

[Komiya Takeshi]

Hi,

blockdiag has a pluggable fremework using setuptools (pkg_resources).
Does py2exe support it?

Thanks,

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[Komiya Takeshi]

Hi,

I guess pyinstaller also does not support loading plug-ins using pkg_resources.
I don't know the way to do that.

Thanks,
Takeshi KOMIYA



2018-03-28 18:44 GMT+09:00 Dario Cassaniti <lord...@gmail.com>:
> Hello, I have the same problem and I am using blockdiag 1.5.3.
> When i run my python program it works smoothly, but when I try to create a
> package with pyinstaller it creates an exe but then when it runs it gives me
> this error:
>
> File "site-packages\blockdiag\drawer.py", line 42, in __init__
> File "site-packages\blockdiag\imagedraw\__init__.py", line 46, in create
> RuntimeError: failed to load png image driver
> [5144] Failed to execute script reportcreator
>
> what am I doing wrong?