‘pip install’ fails for every package (“Could not find a version that satisfies the requirement”)
Mac users who use pip and PyPI:
Python
Text progress bar in terminal with block characters
Every time the progress bar is flushed, it will start on a new line
How to read specific lines from a file (by line number)?
I’m using a for loop to read a file, but I only want to read specific lines, say line #26 and #30. Is there any built-in feature to achieve this?
Is there a standardized method to swap two variables in Python?
In Python, I’ve seen two variable values swapped using this syntax:
List comprehension on a nested list?
I have this nested list:
Decorators with parameters?
I have a problem with the transfer of the variable insurance_mode by the decorator. I would do it by the following decorator statement:
Keyboard input with timeout?
How would you prompt the user for some input but timing out after N seconds?
Equivalent of shell ‘cd’ command to change the working directory?
cd is the shell command to change the working directory.
Usage of __slots__?
What is the purpose of __slots__ in Python — especially with respect to when I would want to use it, and when not?
How do I concatenate text files in Python?
I have a list of 20 file names, like ['file1.txt', 'file2.txt', ...]. I want to write a Python script to concatenate these files into a new file. I could open each file by f = open(...), read line by line by calling f.readline(), and write each line into that new file. It doesn’t seem very “elegant” to me, especially the part where I have to read/write line by line.