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Python <No such file or directory: 'gs' error> even with GhostScript installed on Macintosh * The problem still persists! *

My program implements the following save function, which allows the user to save as a JPEG file everything that he / she draws on the Tkinter canvas using Turtle. How this should work is that it first captures the screen and the Tkinter canvas, and then creates a postscript on it. It then converts this postscript file to PIL (Python Imaging Library) format, and then PIL saves the converted file in JPEG format. My save function is shown below:

def savefirst(): 
    # Capture screen and Tkinter canvas
    cnv = getscreen().getcanvas() 
    global hen
    # Save screen and canvas as Postscript file
    ps = cnv.postscript(colormode = 'color')
    # Open a Tkinter file dialog that allows to input his.her own name for the file
    hen = filedialog.asksaveasfilename(defaultextension = '.jpg')
    # Convert Postscript file to PIL readable format
    im = Image.open(io.BytesIO(ps.encode('utf-8')))
    # Finally save converted file as a JPEG
    im.save(hen + '.jpg')

However, whenever I run this save function, I get the following error:

line 2396, in savefirst
    im.save(hen + '.jpg')
  File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/PIL/Image.py", line 1646, in save
    self.load()
  File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/PIL/EpsImagePlugin.py", line 337, in load
    self.im = Ghostscript(self.tile, self.size, self.fp, scale)
  File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/PIL/EpsImagePlugin.py", line 143, in Ghostscript
    stdout=subprocess.PIPE)
  File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/subprocess.py", line 950, in __init__
    restore_signals, start_new_session)
  File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/subprocess.py", line 1544, in _execute_child
    raise child_exception_type(errno_num, err_msg)
FileNotFoundError: [Errno 2] No such file or directory: 'gs'

GhostScript! , . , , Terminal:

`pip install ghostscript`

, :

`conda install --channel https://conda.anaconda.org/mlgill ghostscript`

3 GhostScript - . ?

FYI: , - Mac OS 10.11.2, Python - 3.5.1.

: , , Homebrew. , , ( Homebrew). , , brew install ghostscript. , GhostScript (, , Homebrew). brew doctor , ! **** Gasp **** , , ! , , , brew link ghostscript. , , , ... , , IDLE ! , gs :

dyld: Library not loaded: /opt/X11/lib/libXt.6.dylib
  Referenced from: //anaconda/bin/gs
  Reason: image not found
Trace/BPT trap: 5

STILL ? Python ( Terminal) gs?

EDIT # 2: , GhostScript Homebrew. , , xQuarts, , -, GhostScript. , STILL ! gs :

:~ #######$ gs
GPL Ghostscript 9.18 (2015-10-05)
Copyright (C) 2015 Artifex Software, Inc.  All rights reserved.
This software comes with NO WARRANTY: see the file PUBLIC for details.

STILL Python, , GhostScript! IDLE , :

FileNotFoundError: [Errno 2] No such file or directory: 'gs'

- ?

№ 3: Python script, , .

- # 4 -

№ 5: , , . , brew doctor , , , - . , , :

Warning: Python is installed at /Library/Frameworks/Python.framework

Homebrew only supports building against the System-provided Python or a
brewed Python. In particular, Pythons installed to /Library can interfere
with other software installs.

, , ? , ?

№ 6: -, ( Mac), ! STILL , savefirst():

line 2395, in savefirst
    im.save(hen + '.jpg')
  File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/PIL/Image.py", line 1646, in save
    self.load()
  File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/PIL/EpsImagePlugin.py", line 337, in load
    self.im = Ghostscript(self.tile, self.size, self.fp, scale)
  File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/PIL/EpsImagePlugin.py", line 143, in Ghostscript
    stdout=subprocess.PIPE)
  File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/subprocess.py", line 950, in __init__
    restore_signals, start_new_session)
  File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/subprocess.py", line 1544, in _execute_child
    raise child_exception_type(errno_num, err_msg)
FileNotFoundError: [Errno 2] No such file or directory: 'gs'

, gs :

x=subprocess.Popen(['/usr/local/bin/gs', '--version'], stdout=subprocess.PIPE)
print(x.stdout.read())

Python IDLE. - Python Imaging Library (PIL) gs (, - subprocess.Popen()?). ? xQuarts, GhostScript PIL, Macintosh, savefirst()! ?

P.S. Macintosh (OS 10.11.2), , Macintosh!

- # 7 -

№ 8: , - (,...) /usr/local/bin/gs PATH ( ):

Library/usr/local/bin/gs:/Library/Frameworks/Python.framework/Versions/3.5/bin:/Library/Frameworks/Python.framework/Versions/3.5/bin:/Library/Frameworks/Python.framework/Versions/3.5/bin:/Library/Frameworks/Python.framework/Versions/3.5/bin://anaconda/bin:/Users/Rohan/anaconda/bin:/Library/Frameworks/Python.framework/Versions/3.5/bin:/Library/Frameworks/Python.framework/Versions/3.4/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/opt/X11/bin

, pico ~MyName/.bash_profile :

PATH="Library/usr/local/bin/gs:${PATH}"
export PATH

/.bash.profile. , FileNotFoundError Python! /usr/local/bin/gs PATH ? , Python Imaging Library STILL gs??

№ 9: ! ! . , , - /usr/local/bin/gs Mac Path , , PYTHONPATH, :

os.environ["PATH"] += ":/usr/local/bin:/usr/local/bin/gs"

! ! PIL gs JPEG, , . , , , , JPEG ( @Copperfield!):)

+4
3

: PIL, shutil, gs do shutil.which("gs"), , , ?

, , , subprocess.Popen gs, . ?

2

, gs ,

>>> import os,shutil,subprocess
>>> shutil.which("gswin64c") # shutil.which("gs")
>>> test = subprocess.Popen(["gswin64c","--version"],stdout=subprocess.PIPE) # subprocess.Popen(["gs","--version"],stdout=subprocess.PIPE)
Traceback (most recent call last): 
  File "<pyshell#3>", line 1, in <module>
    test = subprocess.Popen(["gswin64c","--version"],stdout=subprocess.PIPE)
  File "C:\Anaconda3\lib\subprocess.py", line 950, in __init__
    restore_signals, start_new_session)
  File "C:\Anaconda3\lib\subprocess.py", line 1220, in _execute_child
    startupinfo)
FileNotFoundError: [WinError 2] El sistema no puede encontrar el archivo especificado
>>> os.environ["PATH"]
'C:\\Anaconda3\\Library\\bin;C:\\Anaconda3\\Library\\bin;C:\\Anaconda3;C:\\Anaconda3\\Scripts;C:\\Anaconda3\\Library\\bin;C:\\ProgramData\\Oracle\\Java\\javapath;C:\\Program Files (x86)\\Haskell\\bin;C:\\Program Files (x86)\\Haskell Platform\\2013.2.0.0\\lib\\extralibs\\bin;C:\\Program Files (x86)\\Haskell Platform\\2013.2.0.0\\bin;C:\\Windows\\system32;C:\\Windows;C:\\Windows\\System32\\Wbem;C:\\Windows\\System32\\WindowsPowerShell\\v1.0\\;C:\\Program Files (x86)\\nodejs\\;C:\\Program Files\\MATLAB\\R2009a\\bin;C:\\Program Files\\MATLAB\\R2009a\\bin\\win64;C:\\Program Files (x86)\\Haskell Platform\\2013.2.0.0\\mingw\\bin;C:\\Program Files\\MiKTeX 2.9\\miktex\\bin\\x64\\;C:\\Program Files (x86)\\Skype\\Phone\\;C:\\Anaconda3;C:\\Anaconda3\\Scripts;C:\\Anaconda3\\Library\\bin;C:\\Users\\David\\AppData\\Roaming\\cabal\\bin;C:\\Users\\David\\AppData\\Roaming\\npm;C:\\Program Files (x86)\\Java\\jre7\\bin;C:\\Users\\David\\Dropbox\\Programas Random'
>>> os.environ["PATH"] += ";C:\\Program Files\\gs\\gs9.18\\bin"
>>> shutil.which("gswin64c")
'C:\\Program Files\\gs\\gs9.18\\bin\\gswin64c.EXE'
>>> test = subprocess.Popen(["gswin64c","--version"],stdout=subprocess.PIPE)
>>> test.stdout.read()
b'9.18\n'
>>>

, :

#this is very first import
import os
print("## Addind gs to environ ##", os.environ["PATH"] )
os.environ["PATH"] += ";C:\\Program Files\\gs\\gs9.18\\bin"
print("## Addind gs to environ ##", os.environ["PATH"] )

#then the others import, and everything else

.

:

#this is very first import
import os
print("## Addind gs to environ ##", os.environ["PATH"] )
os.environ["PATH"] += ":/usr/local/bin" 
print("## Addind gs to environ ##", os.environ["PATH"] )
#then the others import, and everything else

- ,

os.environ["PATH"] += "Library/usr/local/bin" 
os.environ["PATH"] = "/usr/local/bin:" + os.environ["PATH"]
os.environ["PATH"] = "Library/usr/local/bin:" + os.environ["PATH"]

3

, :

#this is the very first thing to do
import os, subprocess, shutil
#see is gs is avaible
if shutil.which("gs") is None:
   print("GhostScrip is not avaible, search for it")
   try:
      gs = subprocess.Popen(["which","gs"],stdout=subprocess.PIPE)
      gs_path = gs.stdout.read()
      gs_path = gs_path.decode() if isinstance(gs_path,bytes) else gs_path
      print("GhostScrip found in",gs_path)
      os.environ["PATH"] += ":"+ os.path.dirname(gs_path)
   except Exception as e:
      raise Warning("GhostScrip not found, this program may fail")

del subprocess
del shutil

#then everything else
+1

10.11.2 homebrew, python, XQuartz 2.7.8 (http://www.xquartz.org). (https://discussions.apple.com/thread/1922974?tstart=0)

0

, . homebrew ghostscript :

ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"

...

brew install ghostscript

, brew info ghostscript:

--with-djvu
        Build drivers for DjVU file format
--with-x11
        Build with x11 support
--HEAD
        Install HEAD version

.

0

Source: https://habr.com/ru/post/1622506/

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