Develop Reference

Determining the issue regarding python versions for running repo init

When I am using repo init to initialize some repo from a source, I keep getting:
Traceback (most recent call last):
File "/home/workspace/.repo/repo/main.py", line 56, in <module>
from subcmds.version import Version
File "/home/workspace/.repo/repo/subcmds/__init__.py", line 38, in <module>
['%s' % name])
File "/home/workspace/.repo/repo/subcmds/upload.py", line 27, in <module>
from hooks import RepoHook
File "/home/workspace/.repo/repo/hooks.py", line 472
file=sys.stderr)
^
SyntaxError: invalid syntax
The following are the python versions I have:
python -V -> 2.7
python3 -V -> 3.6
According to this link, python 3.6 is required starting with repo-1.14 but I'm not certain if that's what my repo version is - didn't have any luck finding a way around determining the version.

Looks like you are running an old repo launcher script version that is incompatible with the latest repo version. To fix this, download the latest repo launcher python script from Google and replace your outdated one.
The launcher script is the executable python script called "repo" and is located in your PATH, usually ~/bin (according to Google's instructions) or ~/.local/bin/. To find out where yours is located, type which repo in the terminal and it will print the script's location.
Let's say your repo script is in ~/bin. To download the script (and make it executable), you can do:
curl https://storage.googleapis.com/git-repo-downloads/repo > ~/bin/repo
chmod a+x ~/bin/repo
Also, you do not need to remove Python 2.7 for repo to work. I use Ubuntu 18.04 and have both Python 2.7 and 3.6 installed as well, and repo runs fine.

MacOS, c++ python extension cannot find a dynamic library

I'm building a c++ python extension. So far, I created versions for Linux and Windows. Currently, I'm struggling with the MacOS version. CMake produces 2 libraries:
43898860 Aug 29 13:40 libslide_io.dylib
214876 Aug 29 13:40 slideio.cpython-35m-darwin.so
I pack them to a whl file. After installation with pip, when I try to import the package, I'm getting the following error:
(sld-35)dist % python -c "import slideio"
Traceback (most recent call last):
File "<string>", line 1, in <module>
ImportError: dlopen(/Users/.../opt/anaconda3/envs/sld-35/lib/python3.5/site-packages/slideio.cpython-35m-darwin.so, 2): Library not loaded: libslide_io.dylib
Referenced from: /Users/.../opt/anaconda3/envs/sld-35/lib/python3.5/site-packages/slideio.cpython-35m-darwin.so
Reason: image not found
Both libraries are correctly placed to the python environment directory:
/Users/.../opt/anaconda3/envs/sld-35/lib/python3.5/site-packages/
Moreover, if I unzip the whl file and import the package from the current directory, it works.
I suspect that it is something with rpath settings in my cmake files, but cannot find the correct solution. All my attempts are failed.
I would appreciate any help.

If somebody is interested. I solved the problem by adding a post-build with the execution of install_name utility with the #loader_path parameter. The command instructs the system looking for the library at the loader (in my case - the python package) folder.
if (APPLE)
add_custom_command(TARGET ${BINDLIB_NAME}
POST_BUILD COMMAND
${CMAKE_INSTALL_NAME_TOOL} -change libslide_io.dylib #loader_path/libslide_io.dylib
$<TARGET_FILE:${BINDLIB_NAME}>)
endif()

Installing SIP for Python 2.7 on windows 10

I have seen many threads that have a high level of ambiguity and go off on tangents from the original question, often assuming much about the authors ability, so I am hoping that if I am direct and concise with my information, I will get an answer that is in line with the requirement. I know that the serious programmers will have seen this many times, in many formats, so please just bear with me as this is doing my head in. Please do not just post a link to some other answer as I rarely find that helps with my current issue.
I am not a hardcore programmer, I find the compiling, sourceball, tar, gz all nonsense to be honest and am looking for the easiest way to install sip for python on my machine. I have installed various versions of mingw32, mingw64 to the point that I don't know which one is best to use. I am assuming that the one here: C:\Program Files\mingw-w64 is the one, considering I am using 64 bit, but do the others I have installed impact on this?
I also installed versions of mysys:
C:\msys\1.0,
C:\msys64, but I still m unclear what and why etc, despite trying to read the docs that came with them.
I have windows 10, 64 bit professional edition.
I have python 2.7
I have installs of mingw, 32 bit and 64 bit in various locations, due mostly to not fully understanding what exactly it was or where it should go. I found zips of it and exes, so I got a bit confused.
I downloaded the sip package and unpacked it to here: C:\Python27\Lib\site-packages\sip-4.19.3 and it has the configure.py file in it. So far, so good.
I used a CMD window, changed directory to: C:\Python27\Lib\site-packages\sip-4.19.3 and then used the command: python configure.py to create the Makefile file which is what I believe is supposed to happen.
I then opened the mingw64 shell, changed directory to the above sip folder and typed: python configure.py again, just to be sure I would get a response and create the files again, probably should not have done so, but hey ho, at this point, I am quite frustrated with it and trying to do anything with what I have, which I know is poor practice. (see image 1.)
image 1: configure.py executed
From what I have read, I should use the make function that comes with Mingw64, but I tried the following, which also includes the configure.py code, but nothing seems to work when trying to use the Makefile file that was created via the configure.py process.
c:\Python27>cd ./Lib/site-packages/sip-4.19.3
c:\Python27\Lib\site-packages\sip-4.19.3> python configure.py
This is SIP 4.19.3 for Python 2.7.13 on win32.
The SIP code generator will be installed in C:\Python27.
The sip module will be installed in C:\Python27\Lib\site-packages.
The sip.pyi stub file will be installed in C:\Python27\Lib\site-packages.
The sip.h header file will be installed in C:\Python27\include.
The default directory to install .sip files in is C:\Python27\sip.
Creating siplib\sip.h...
Creating siplib\siplib.c...
Creating siplib\siplib.sbf...
Creating sipconfig.py...
Creating top level Makefile...
Creating sip code generator Makefile...
Creating sip module Makefile...
c:\Python27\Lib\site-packages\sip-4.19.3> Makefile
'Makefile' is not recognized as an internal or external command,
operable program or batch file.
c:\Python27\Lib\site-packages\sip-4.19.3> make Makefile
make: Nothing to be done for `Makefile'.
c:\Python27\Lib\site-packages\sip-4.19.3> Makefile Makefile
'Makefile' is not recognized as an internal or external command,
operable program or batch file.
c:\Python27\Lib\site-packages\sip-4.19.3>
So now I am at an impasse. I have the locations of my mingw versions and the msys in my path environment variable and I have done just about everything I have looked at on the web. I realise that its an order of things, but I really wish there were just executables for these modules and supporting tools as this compiling is a ball ache.I tried opening a python shell and importing sip.
>>> import os, sys
>>> import sip
Traceback (most recent call last):
File "<pyshell#1>", line 1, in <module>
import sip
ImportError: No module named sip
>>> import sipconfig
Traceback (most recent call last):
File "<pyshell#2>", line 1, in <module>
import sipconfig
ImportError: No module named sipconfig
>>> from sip import sip
Traceback (most recent call last):
File "<pyshell#3>", line 1, in <module>
from sip import sip
ImportError: No module named sip
>>> from sipconfig impport sip
SyntaxError: invalid syntax
>>> from sip import *
Traceback (most recent call last):
File "<pyshell#5>", line 1, in <module>
from sip import *
ImportError: No module named sip
So, if anyone has read through this and has a definitive answer as to what I am doing wrong, I would appreciate it.

make/nmake or make/nmake install cant be done from cmd and python path; instead using mingw or visual studio tools.
In windows search for prompt or Visual studio tools to open VS Command promt and from there cd--> sip file location (before this run configure.py present in sip folder)
Now run the commands nmake and then nmake install

How to alter setup.py for CyIPOPT

I want to install the python package CyIpopt (https://github.com/matthias-k/cyipopt) on windows 10 and python version 3.5.2. For the binary I am using http://www.coin-or.org/Binaries/Ipopt/Ipopt-3.10.1-Win32-Win64-dll.7z (which I unpacked). The github page gives install instructions. At one point it says:
Download the source files of cyipopt and update setup.py to point to the header files and binaries of the Ipopt package, if LD_LIBRARY_PATH and pkg_config are not setup to find ipopt on their own.
I downloaded the source files from github and edited the setup.py file by altering lines 33-36 to :
IPOPT_ICLUDE_DIRS=['D:\...\Ipopt-3.10.1-Win32-Win64-dll\include\coin', np.get_include()]
IPOPT_LIBS=['IpOptFSS','IpOpt-vc10','IpOpt-vc8']
IPOPT_LIB_DIRS=['D:\...\Ipopt-3.10.1-Win32-Win64-dll\lib\\x64\Release MKL']
IPOPT_DLL=['IpOptFSS.dll','IpOpt-vc10.dll','IpOpt-vc8.dll']
The dots represent the path to these folders on my computer. Now when I run python setup.py install, it run succesfuly. However when I then run python and import ipopt I get the following error:
Traceback (most recent call last):
File "", line 1, in
File "C:\Users\Linthorst\Miniconda3\lib\site-packages\ipopt-0.1.6-py3.5-win-amd64.egg\ipopt__init__.py", line 40, in
from cyipopt import *
ImportError: No module named 'cyipopt'
I suspect I altered the setup.py file incorrectly (since I made an educated guess). I am confused that it installed but doesn't work. Can anybody help me solve this error? Many thanks in advance

Python GUI2Exe Application Standalone Build (Using Py2Exe)

I am trying to build a Python Script into a stand alone application. I am using GUI2Exe. My script uses selenium package. I have it installed.
Project compiles fine and runs on python command line directly but fails to build a stand alone because it is referring to folder:
ERROR: test_file_data_extract (__main__.FileDataExtract)
----------------------------------------------------------------------
Traceback (most recent call last):
File "File_data_extract.py", line 18, in setUp
File "selenium\webdriver\firefox\firefox_profile.pyc", line 63, in __init__
IOError: [Errno 2] No such file or directory: 'C:\\users\\username\\PycharmProjects\\Python_27_32bit\\file_data_extract\\dist\\File_data_extract.exe\\selenium\\webdriver\\firefox\\webdriver_prefs.json'
It is looking for selenium package is located at :
C:\Users\username\Anaconda2_Py27_32bit\Lib\site-packages\selenium-2.48.0-py2.7.egg\selenium\webdriver\firefox
where C:\Users\username\Anaconda2_Py27_32bit is where I installed Anaconda Python 2.7, 32 bit version. By default it is looking for in \dist\filename.exe folder.

I was able to build it using bbfreeze. It works great.
First I had to install bbfreezee via pip (one time only):
pip install bbfreeze
Create a build_package.py file as:
from bbfreeze import Freezer
f = Freezer("project_name", includes=("selenium","SendKeys",)) #list problem packages here to manually include
f.addScript("project_name_script.py")
f() # starts the freezing process
Build project:
python build_package.py bdist_bbfreezee
in folder project_name where project_name_script.py sits you find project_name_script.exe with all the include packages including selenium and sendkeys. When you distribute the package you need to distribute entire project_name because it contains all dependent library dlls (python .pyd).
More details refer official bbfreezee here:
https://pypi.python.org/pypi/bbfreeze/#downloads