PyLaTeX Tutorial Generating Error: [WinError 2] - latex

I am trying to run a tutorial for PyLaTeX in Python 3.5. I am using Anaconda / Spyder. When it runs the command "generate_pdf()", [WinError 2] is generated. Below is the code (it is note quoting properly) and the error. It may be easier simply to look at the link.
def fill_document(doc):
with doc.create(Section('A section')):
doc.append('Some regular text and some ')
doc.append(italic('italic text. '))
with doc.create(Subsection('A subsection')):
doc.append('Also some crazy characters: $&#{}')
if __name__ == '__main__':
# Basic document
doc = Document('basic')
fill_document(doc)
doc.generate_pdf(filepath = r'C:\Users\James\Documents\Important Files\Python Scripts\PyLaTeX',clean_tex=False)
Error:
Traceback (most recent call last):
File "<ipython-input-14-0158fa80c4f1>", line 1, in <module>
runfile('C:/Users/James/Documents/Important Files/Python Scripts/PyLaTeX/basic_tutorial.py',
wdir='C:/Users/James/Documents/Important Files/Python
Scripts/PyLaTeX')
File
"C:\Users\James\Anaconda3\lib\site-packages\spyderlib\widgets\externalshell\sitecustomize.py",
line 714, in runfile
execfile(filename, namespace)
File
"C:\Users\James\Anaconda3\lib\site-packages\spyderlib\widgets\externalshell\sitecustomize.py",
line 89, in execfile
exec(compile(f.read(), filename, 'exec'), namespace)
File "C:/Users/James/Documents/Important Files/Python
Scripts/PyLaTeX/basic_tutorial.py", line 21, in <module>
doc.generate_pdf(filepath = r'C:\Users\James\Documents\Important Files\Python Scripts\PyLaTeX',clean_tex=False)
File
"C:\Users\James\Anaconda3\lib\site-packages\pylatex\document.py", line
203, in generate_pdf
raise(os_error)
File
"C:\Users\James\Anaconda3\lib\site-packages\pylatex\document.py", line
157, in generate_pdf
stderr=subprocess.STDOUT)
File "C:\Users\James\Anaconda3\lib\subprocess.py", line 629, in
check_output
**kwargs).stdout
File "C:\Users\James\Anaconda3\lib\subprocess.py", line 696, in run
with Popen(*popenargs, **kwargs) as process:
File "C:\Users\James\Anaconda3\lib\subprocess.py", line 950, in
__init__
restore_signals, start_new_session)
File "C:\Users\James\Anaconda3\lib\subprocess.py", line 1220, in
_execute_child
startupinfo)
FileNotFoundError: [WinError 2] The system cannot find the file
specified
Thanks in advance.

I also had the exact same problem, but there was a .log file present in the directory. So I checked out the log, and the last few lines said that a package called lastpage.sty was not found (I'm on Linux), so I just downloaded all the latex packages again using apt.
So I think, you should read the log file too, and if there IS something like that, then go to ctan (all packages are found there) and install the required package for Windows.
Hope it helped.
Also try putting the document.generate_tex() before the document.generate_pdf(filepath="path/to/file", clean_tex=False)

Related

Error in making python2.7 file executable with official py2app instructions on a hello word program

OSX 10.14 (Mojave)
python 2.7
py2app version = most recent as of Feb 11th 2019
I follow the official instructions found here:
https://py2app.readthedocs.io/en/latest/tutorial.html
I'm trying to get it to make a standalone for a 'hello world' program.
Everything works until the last step, which is 'python setup.py py2app'. I get the following error:
"Traceback (most recent call last):
File "setup.py", line 18, in
setup_requires=['py2app'],"
I did not modify the contents of the setup.py file, so they are as follows"
#
from setuptools import setup
APP = ['appp.py']
DATA_FILES = []
OPTIONS = {}
setup(
app=APP,
data_files=DATA_FILES,
options={'py2app': OPTIONS},
setup_requires=['py2app'],
)
#
Note that prior to this last step, I did indeed run 'rm -rf build dist' as instructed.
The error that I get is:
Traceback (most recent call last):
File "setup.py", line 18, in
setup_requires=['py2app'],
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/setuptools/init.py", line 145, in setup
return distutils.core.setup(**attrs)
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/distutils/core.py", line 151, in setup
dist.run_commands()
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/distutils/dist.py", line 953, in run_commands
self.run_command(cmd)
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/distutils/dist.py", line 972, in run_command
cmd_obj.run()
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/py2app/build_app.py", line 838, in run
self._run()
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/py2app/build_app.py", line 1053, in _run
self.run_normal()
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/py2app/build_app.py", line 1150, in run_normal
self.process_recipes(mf, filters, flatpackages, loader_files)
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/py2app/build_app.py", line 1007, in process_recipes
rval = check(self, mf)
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/py2app/recipes/six.py", line 113, in check
mf.import_hook(nm, m)
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/modulegraph/modulegraph.py", line 1082, in import_hook
q, tail = self._find_head_package(parent, name, level)
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/modulegraph/modulegraph.py", line 1182, in _find_head_package
raise ImportError("No module named " + qname)
ImportError: No module named gdbm

Dart VM fails to build on windows

I am trying to buiil Dart-VM on windows, I follow the steps as described here
https://github.com/dart-lang/sdk/wiki/Building
When I run the build.py command as below:
.\tools\build.py --mode release --arch x64 create_sdk
I get the following error:
gn gen --check in out\ReleaseX64
Traceback (most recent call last):
File "D:\ops\dart\sdk\tools\gn.py", line 436, in <module>
sys.exit(main(sys.argv))
File "D:\ops\dart\sdk\tools\gn.py", line 423, in main
results = pool.map(run_command, commands, chunksize=1)
File "C:\app\Python27\lib\multiprocessing\pool.py", line 251, in map
return self.map_async(func, iterable, chunksize).get()
File "C:\app\Python27\lib\multiprocessing\pool.py", line 567, in get
raise self._value
WindowsError: [Error 2] System cannot find file。
Tried to run GN, but it failed. Try running it manually:
$ python D:\ops\dart\sdk\tools\gn.py -m release -a x64 --os host -v
Traceback (most recent call last):
File "D:\ops\dart\sdk\tools\build.py", line 658, in <module>
sys.exit(Main())
File "D:\ops\dart\sdk\tools\build.py", line 651, in Main
mode, arch, cross_build) != 0:
File "D:\ops\dart\sdk\tools\build.py", line 491, in BuildOneConfig
args = BuildNinjaCommand(options, target, target_os, mode, arch)
File "D:\ops\dart\sdk\tools\build.py", line 473, in BuildNinjaCommand
if UseGoma(out_dir):
File "D:\ops\dart\sdk\tools\build.py", line 431, in UseGoma
return 'use_goma = true' in open(args_gn, 'r').read()
IOError: [Errno 2] No such file or directory: 'out\\ReleaseX64\\args.gn'
It seems missing the args.gn file in out\ReleaseX64 folder. but I cannot find args.gn in Dart source folders. Is it generated during building process? whether I do wrong steps led to no such file generated?

Kivy app crashes after being packaged with pyinstaller due to window issue

I'm trying to package my kivy project with Pyinstaller but it crashes and spits this out
[CRITICAL ] [Window ] Unable to find any valuable Window provider at all!
sdl2 - Exception: SDL2: Unable to load image
File "site-packages\kivy\core\__init__.py", line 67, in core_select_lib
File "site-packages\kivy\core\window\window_sdl2.py", line 138, in __init__
File "site-packages\kivy\core\window\__init__.py", line 722, in __init__
File "site-packages\kivy\core\window\window_sdl2.py", line 255, in
create_window
File "site-packages\kivy\core\window\__init__.py", line 897, in create_window
File "kivy\graphics\instructions.pyx", line 756, in
kivy.graphics.instructions.RenderContext.__init__ (kivy\graphics\instructions.c:10729)
File "site-packages\kivy\core\image\__init__.py", line 512, in __init__
File "site-packages\kivy\core\image\__init__.py", line 700, in _set_filename
File "site-packages\kivy\core\image\__init__.py", line 430, in load
File "site-packages\kivy\core\image\__init__.py", line 198, in __init__
File "site-packages\kivy\core\image\img_sdl2.py", line 42, in load
[INFO ] [Audio ] Providers: audio_sdl2 (audio_ffpyplayer ignored)
[CRITICAL ] [App ] Unable to get a Window, abort.
Exception ignored in: 'kivy.properties.dpi2px'
Traceback (most recent call last):
File "site-packages\kivy\utils.py", line 513, in __get__
File "site-packages\kivy\metrics.py", line 175, in dpi
File "site-packages\kivy\base.py", line 126, in ensure_window
SystemExit: 1
[CRITICAL ] [App ] Unable to get a Window, abort.
Exception ignored in: 'kivy.properties.dpi2px'
Traceback (most recent call last):
File "site-packages\kivy\utils.py", line 513, in __get__
File "site-packages\kivy\metrics.py", line 175, in dpi
File "site-packages\kivy\base.py", line 126, in ensure_window
SystemExit: 1
[CRITICAL ] [App ] Unable to get a Window, abort.
I did not create my own spec file I chose to do it via the command line by passing the required arguments any suggestions?
This is the spec file generated by pyinstaller
# -*- mode: python -*-
block_cipher = None
a = Analysis(['apv.py'],
pathex=['C:\\Python34\\Lib\\site-packages\\kivy', 'C:\\Python34', 'C:\\Python34\\Lib', 'C:\\Python34\\Lib\\site-packages', 'C:\\Users\\suroh\\Desktop\\my-python-modules', 'C:\\Python34\\Lib\\site-packages\\kivy\\deps', 'C:\\Python34\\Lib\\site-packages\\kivy\\graphic', 'C:\\Python34\\DLLs', 'C:\\Python34\\libs', 'C:\\Python34\\Scripts', 'C:\\Python34\\share\\sdl2\\bin', 'C:\\Python34\\share\\glew\\bin', 'C:\\Python34\\share', 'C:\\Python34\\Tools', 'C:\\Python34\\Lib\\ctypes', 'C:\\Python34\\Lib\\distutils', 'C:\\Users\\suroh\\Desktop\\Python Projects\\testp\\Beta 01'],
binaries=None,
datas=None,
hiddenimports=[],
hookspath=[],
runtime_hooks=[],
excludes=['pygame'],
win_no_prefer_redirects=False,
win_private_assemblies=False,
cipher=block_cipher)
pyz = PYZ(a.pure, a.zipped_data,
cipher=block_cipher)
exe = EXE(pyz,
a.scripts,
exclude_binaries=True,
name='apv',
debug=False,
strip=False,
upx=True,
console=False , icon='LauncherIcon.ico')
coll = COLLECT(exe,
a.binaries,
a.zipfiles,
a.datas,
strip=False,
upx=True,
name='apv')
If you didn't create spec file, you still need to package the dependencies which are here in the Collect().
As it is mentioned in the pyinstaller's docs:
You can give additional files on the pyinstaller command line.
Which means that you could do --add-data or you can dump the spec somewhere and edit it manually with --specpath. Here is what Collect() basically does to package the stuff.
Edit:
Yup, you're definitely missing the deps. Look at kivy's spec.
If you would go for --add-data, you should check kivy.deps folder and __init__()s in them, because those will tell you what path you are looking for. But editing the spec manually is less time consuming.

Ipython notebook, how to set the correct path to kernel

When Running ipyhton notebook on Windows 7 64bit and launching notebook with python 2 kernel I get an error:
Traceback (most recent call last):
File "C:\Users\USER1\Anaconda2\lib\site-packages\notebook\base\handlers.py", line 436, in wrapper
result = yield gen.maybe_future(method(self, *args, **kwargs))
File "C:\Users\USER1\Anaconda2\lib\site-packages\notebook\services\sessions\handlers.py", line 56, in post
model = sm.create_session(path=path, kernel_name=kernel_name)
File "C:\Users\USER1\Anaconda2\lib\site-packages\notebook\services\sessions\sessionmanager.py", line 66, in create_session
kernel_name=kernel_name)
File "C:\Users\USER1\Anaconda2\lib\site-packages\notebook\services\kernels\kernelmanager.py", line 84, in start_kernel
**kwargs)
File "C:\Users\USER1\Anaconda2\lib\site-packages\jupyter_client\multikernelmanager.py", line 109, in start_kernel
km.start_kernel(**kwargs)
File "C:\Users\USER1\Anaconda2\lib\site-packages\jupyter_client\manager.py", line 244, in start_kernel
**kw)
File "C:\Users\USER1\Anaconda2\lib\site-packages\jupyter_client\manager.py", line 190, in _launch_kernel
return launch_kernel(kernel_cmd, **kw)
File "C:\Users\USER1\Anaconda2\lib\site-packages\jupyter_client\launcher.py", line 115, in launch_kernel
proc = Popen(cmd, **kwargs)
File "C:\Users\USER1\Anaconda2\lib\subprocess.py", line 710, in __init__
errread, errwrite)
File "C:\Users\USER1\Anaconda2\lib\subprocess.py", line 958, in _execute_child
startupinfo)
WindowsError: [Error 2] The system cannot find the file specified
I have investigated further and I have added following print lines before proc = Popen(cmd, **kwargs) inside launcher.py file
print cmd
print kwargs
Now I see that proc = Popen(cmd, **kwargs) is called with cmd=
['C:\\Users\\USER1\\Anaconda2_32bit\\python.exe', '-m', 'ipykernel', '-f', '
C:\\Users\\USER1\\AppData\\Roaming\\jupyter\\runtime\\kernel-a3f46334-4491-4
fef-aeb1-6772b8392954.json']
this is a problem because my python.exe is not in
C:\\Users\\USER1\\Anaconda2_32bit\\python.exe
but in
C:\\Users\\USER1\\Anaconda2\\python.exe
However I have checked paths in Computer/Advanced system settings/Advanced/Enviroment variables and \\Anaconda2_32bit\\ is never specified there.
Thus I suspect that the false path is specified somewhere else. Where could this be and how can I fix it?
Also I have previously had an installation of Anaconda in \\Anaconda2_32bit\\ but I have uninstalled it.
The ipython has kernels registered in special configuration files
I have run the command:
ipython kernelspec list
the output was:
Available kernels:
python2 C:\ProgramData\jupyter\kernels\python2
I have looked into C:\ProgramData\jupyter\kernels\python2\kernel.json file and there was a wrong path set for python2. I have fixed the path and it works now.

OPEN CV iOS installation

I am installing the opencv in my system followings the command given by open cv http://docs.opencv.org/2.4/doc/tutorials/introduction/ios_install/ios_install.html
I am getting this error Please let me know what I am missing.
anil-Mac-2s-Mac-mini:opencv pws-mac-2$ python platforms/ios/build_framework.py ios
Executing: ['cmake', '-GXcode', '-DCMAKE_BUILD_TYPE=Release', '-DCMAKE_TOOLCHAIN_FILE=/Users/pws-mac-2/Desktop/opencv/platforms/ios/cmake/Toolchains/Toolchain-iPhoneOS_Xcode.cmake', '-DCMAKE_INSTALL_PREFIX=install', '-DENABLE_NEON=ON', '/Users/pws-mac-2/Desktop/opencv', '-DCMAKE_C_FLAGS=-fembed-bitcode', '-DCMAKE_CXX_FLAGS=-fembed-bitcode'] in /Users/pws-mac-2/Desktop/opencv/ios/build/armv7-iPhoneOS
============================================================
ERROR: [Errno 2] No such file or directory
============================================================
Traceback (most recent call last):
File "platforms/ios/build_framework.py", line 183, in <module>
b.build(args.out)
File "platforms/ios/build_framework.py", line 87, in build
self.buildOne(t[0], t[1], mainBD, cmake_flags)
File "platforms/ios/build_framework.py", line 105, in buildOne
execute(cmakecmd, cwd = builddir)
File "platforms/ios/build_framework.py", line 34, in execute
retcode = check_call(cmd, cwd = cwd)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/subprocess.py", line 535, in check_call
retcode = call(*popenargs, **kwargs)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/subprocess.py", line 522, in call
return Popen(*popenargs, **kwargs).wait()
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/subprocess.py", line 710, in __init__
errread, errwrite)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/subprocess.py", line 1335, in _execute_child
raise child_exception
OSError: [Errno 2] No such file or directory
I am getting this error Please let me know how to resolve . . .
This error happens because cmake is either (a) not installed or (b) not on the user's path.
In this case, the OP had downloaded the cmake gui application from cmake.org, and copied it to /Applications. This app doesn't add the path to the binaries automatically, which is why the script couldn't find cmake.
By adding the path to the cmake binaries (bash syntax):
PATH=$PATH:/Applications/CMake.app/Contents/bin
the OP was able to successfully build opencv.
Most package managers - e.g. homebrew or macports whould have automatically added a path to the user's profile that would have permitted it to run without having to modify the path any more.
You may need to install CMake
My-Mac: opencv$ brew install cmake

Resources