How to check if string input is a number?
How do I check if a user’s string input is a number (e.g. -1, 0, 1, etc.)?
python
How to read a large file – line by line?
I want to iterate over each line of an entire file. One way to do this is by reading the entire file, saving it to a list, then going over the line of interest. This method uses a lot of memory, so I am looking for an alternative.
Use of *args and **kwargs
So I have difficulty with the concept of *args and **kwargs. So far I have learned that: *args = list of arguments – as positional arguments **kwargs = dictionary – whose keys become separate keyword arguments and the values become values of these arguments. I don’t understand what programming task this would be helpful for. … Read more
How to download a file over HTTP?
I have a small utility that I use to download an MP3 file from a website on a schedule and then builds/updates a podcast XML file which I’ve added to iTunes.
Why do backslashes appear twice?
When I create a string containing backslashes, they get duplicated:
What exactly do “u” and “r” string prefixes do, and what are raw string literals?
While asking this question, I realized I didn’t know much about raw strings. For somebody claiming to be a Django trainer, this sucks.
Get the data received in a Flask request
I want to be able to get the data sent to my Flask app. I’ve tried accessing request.data but it is an empty string. How do you access request data?
Split a Pandas column of lists into multiple columns
I have a Pandas DataFrame with one column:
How to extract numbers from a string in Python?
I would like to extract all the numbers contained in a string. Which is better suited for the purpose, regular expressions or the isdigit() method?
How to put the legend outside the plot in Matplotlib
I have a series of 20 plots (not subplots) to be made in a single figure. I want the legend to be outside of the box. At the same time, I do not want to change the axes, as the size of the figure gets reduced. Kindly help me for the following queries: