Advertisements When loading file resources that are bundled inside my distribution package, I use importlib.resources.files. When loading files from disk, I use pathlib.Path. Sometimes I want to write a function that will take either: from importlib.resources.abc import Traversable from pathlib import Path def process_file(file_to_process: Traversable | Path) -> None: … It feels cumbersome to annotate… Read More Type annotations: pathlib.Path vs importlib.resources.abc.Traversable

Advertisements In python3 console >>> x1=tempfile.TemporaryDirectory() >>> print(type(x1)) <class ‘tempfile.TemporaryDirectory’> >>> with tempfile.TemporaryDirectory() as x2: … print(type(x2)) … <class ‘str’> Why is x1 a TemporaryDirectory and x2 a str? >Solution : Because with foo() as x has x take on the value of foo().__enter__()‘s return value. x = foo() is a different thing. See here… Read More why does TemporaryDirectory change type within a "with" block?

Advertisements I’m trying to find out how exactly importing works in Python. Let’s say I have a foo.py module that contains the following class: class Foo: def __init__(self, *args, **kwargs): … foo = Foo() Now, I want to import it in other modules. Is it going to use the same instance every time that I… Read More How Python imports an instance of a class

Advertisements I’m working on a Python script where I need to convert base 10 integers to base 80 using a specific set of characters. I’ve implemented a function for this purpose, but I keep encountering an IndexError due to the index going out of range. Here’s the function I’m using: def base10_to_base80(n): base_80 = ‘0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ-_.~!$&\'()*+,:;=/’… Read More How can I convert base 10 integers to base 80 in Python without encountering IndexError?

Advertisements I´m new to python and I’m trying some challenges on a page that I found I’m trying to extract a date from a string, so I can then put it in a column, this is the input they give me: "131594", "", "BIDGROUP", 1, 0, 0, 2, "", 0:00, 0:00, 01JAN2009, 01JAN2009, 01JAN2009, 01JAN2009,… Read More How to Fix an Error Processing Dates in Python?

Advertisements Is there a way to shorten this code? I want to print something if both a, b is in the dic, or a-foo, b-foo is in the dic or a-bar, b-bar is in the dic. Consider -foo and -bar to be fixed values. Can I join the multiple if-s with or statements? The dict… Read More Check for multiple value pairs in dictionary

Advertisements Here is a simplified running code to show my problem: class c_event(): cl_attr = None def __init__(self, mystring): print(self.cl_attr) if self.cl_attr is None: self.cl_attr = mystring print(self.cl_attr) var1 = c_event(‘123’) var2 = c_event(‘456’) print(var1.cl_attr) print(var2.cl_attr) print(c_event.cl_attr) I am under the assumption that a class attribute defined like I did is common, read- and writeable… Read More Changing class attribute not working as expected

Advertisements I have this code: def warnTime(i): i += 1 print(i) t = Timer(20, warnTime) t.start() The rest of the code works just fine, but when it comes to this part, it raises the TypeError. When I try to get the variable value it does the same thing. When I try to do i =… Read More TypeError: warnTime() missing 1 required positional argument: i

Advertisements I have structured my python project on Windows so that Juypter notebooks are in there own folder. The paths are like this: \src\tracker\timer.py \notebooks\notebook_files.nypyb My import statement in the notebook_file used to look like: from timer import Timer But now this fails with import could not be resolved. I have tried various combinations to… Read More path syntax in python on windows for imports

Advertisements I have a list of dictionaries: x = [{‘a’: {‘b’: ‘c’}}, {‘a’: {‘d’: ‘e’}}] I want the output [{‘b’: ‘c’, ‘d’: ‘e’}] which is grouping of values if the keys are same from different dictionary. In the above example the key is ‘a’ and I want to get the values from all the keys… Read More group the values from different dictionary with same key