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How-to articles, tricks, and solutions about PACKAGE

"pip install unroll": "python setup.py egg_info" failed with error code 1

Here is an example of a command that could cause the error you described:

python package installation pip

Can you find all classes in a package using reflection?

Yes, it is possible to find all classes in a package using reflection in Java.

java package reflection

How can I solve "java.lang.NoClassDefFoundError"?

java.lang.NoClassDefFoundError is an error that occurs when the Java Virtual Machine (JVM) can't find a required class definition at runtime. This can happen for a variety of reasons, including:

java exception package noclassdeffounderror

How to fix "Attempted relative import in non-package" even with init.py

The "Attempted relative import in non-package" error occurs when attempting to use a relative import within a script that is not part of a package.

python package importerror python-import init

How to install pip with Python 3?

To install pip with Python 3, you can use the following command:

python package python-3.x pip setuptools

What is init.py for?

__init__.py is a special Python file that is used to indicate that the directory it is present in is a Python package.

python package module python-packaging

What is thread safe or non-thread safe in PHP?

In PHP, a thread-safe version of PHP is built with additional constructs to ensure that certain actions are atomic, which means that they are performed in their entirety without any other thread being able to interfere.

php package multithreading thread-safety threadcontext