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python
How to include only needed modules in pyinstaller?
For this you need to create a separate environment, because currently you are reading all the modules you have installed on your computer. To create environment run commands 1 - if you don't have one, create a requirements.txt file that holds all packages that you are using, you could create one with: pip freeze > requirements.txt 2 - create env folder: python -m venv projectName 3 - activate the environment: source projectName/bin/activate 4 - install them: pip install -r requirements.txt alternatively if you know you are using only wxpython you could just pip install wxpython 5 - then finally you can run pyinstaller on your main script with the --path arg as explained in this answer: pyinstaller --paths projectName/lib/python3.7/site-packages script.py   How to include only needed modules in pyinstaller? I'm using pyinstaller to generate an .exe file for my single python file, but the size is more than 30MB and the startup is very slow. From what I have gathered is that pyinstaller by default bundl... https://stackoverflow.com/questions/55312146/how-to-include-only-needed-modules-in-pyinstaller
John Doe · Feb. 23, 2023, 8:36 p.m.
python
Django migrate gets error "table already exists"
1. Remove all migration files in <appname>/migrations 2. Remove all data in django_migrations table where app = <appname> 3.  python manage.py makemigrations <appname> 4.  python manage.py migrate --fake <appname> 5. If you have a field to alter, then alter the field <field> on <appname> and then again python manage.py makemigrations <appname> 6. python manage.py migrate <appname> Child's play.   0003이 실제로 적용된 가장 최근의 마이그레이션이라 가정할 때에는? --fake를 이용하여 현재 상태는 0003이다 라고 장고가 인식하게끔 해주어야 한다. python manage.py migrate --fake <appname> 0003 그 후 평소 하던대로 진행.   django 1.7 migrate gets error "table already exists" I am trying to apply a migration but am getting the error: django.db.utils.OperationalError: (1050, "Table 'customers_customer' already exists") I get this by issuing the following command: ... https://stackoverflow.com/questions/25924858/django-1-7-migrate-gets-error-table-already-exists How to redo a migration on django 1.8 after using --fake Something went wrong on my migrations, I added a new datetimefield to a model then I used makemigrations and migrate. python manage.py makemigrations python manage.py migrate But after this the m... https://stackoverflow.com/questions/30626886/how-to-redo-a-migration-on-django-1-8-after-using-fake
John Doe · Jan. 12, 2023, 9:59 p.m.
django migration
python
Fix SSL error when install packages using pip
Q : pip install fails with "connection error: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:598)"   A : pip install gensim config --global http.sslVerify false Just install any package with the "config --global http.sslVerify false" statement You can ignore SSL errors by setting pypi.org and files.pythonhosted.org as well as the older pypi.python.org as trusted hosts. $ pip install --trusted-host pypi.org --trusted-host pypi.python.org --trusted-host files.pythonhosted.org <package_name> Note: Sometime during April 2018, the Python Package Index was migrated from pypi.python.org to pypi.org. This means "trusted-host" commands using the old domain no longer work, but you can add both. Permanent Fix Since the release of pip 10.0, you should be able to fix this permanently just by upgrading pip itself: $ pip install --trusted-host pypi.org --trusted-host pypi.python.org --trusted-host files.pythonhosted.org pip setuptools Or by just reinstalling it to get the latest version: $ curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py (… and then running get-pip.py with the relevant Python interpreter). pip install <otherpackage> should just work after this. If not, then you will need to do more, as explained below. You may want to add the trusted hosts and proxy to your config file. pip.ini (Windows) or pip.conf (unix) [global] trusted-host = pypi.python.org pypi.org files.pythonhosted.org Alternate Solutions (Less secure) Most of the answers could pose a security issue. Two of the workarounds that help in installing most of the python packages with ease would be: Using easy_install: if you are really lazy and don't want to waste much time, use easy_install <package_name>. Note that some packages won't be found or will give small errors. Using Wheel: download the Wheel of the python package and use the pip command pip install wheel_package_name.whl to install the package. https://stackoverflow.com/questions/25981703/pip-install-fails-with-connection-error-ssl-certificate-verify-failed-certi/26062583
John Doe · Jan. 12, 2023, 3:28 a.m.
ssl pip
python
How do I check which version of Python is running my script?
This information is available in the sys.version string in the sys module: >>> import sys Human readable: >>> print(sys.version) # parentheses necessary in python 3. 2.5.2 (r252:60911, Jul 31 2008, 17:28:52) [GCC 4.2.3 (Ubuntu 4.2.3-2ubuntu7)] For further processing, use sys.version_info or sys.hexversion: >>> sys.version_info (2, 5, 2, 'final', 0) # or >>> sys.hexversion 34014192 To ensure a script runs with a minimal version requirement of the Python interpreter add this to your code: assert sys.version_info >= (2, 5) This compares major and minor version information. Add micro (=0, 1, etc) and even releaselevel (='alpha','final', etc) to the tuple as you like. Note however, that it is almost always better to "duck" check if a certain feature is there, and if not, workaround (or bail out). Sometimes features go away in newer releases, being replaced by others. or Use platform's python_version from the stdlib: from platform import python_version print(python_version()) # 3.9.2 https://stackoverflow.com/questions/1093322/how-do-i-check-which-version-of-python-is-running-my-script
John Doe · Jan. 12, 2023, 1:19 a.m.
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