Python Tips

If you are using a for loop and you want to know what the error is when it occurs without stopping the for loop, use try and except.
Remember to add Exception as e after except statement to print the error like above.
Favorite

If you want to create code that does a particular thing but don’t know how to write that code yet, put that code in a function then use pass.
Once you have completed the bigger picture of the code, start to go back to the function and replace pass with the code for that function.
This will prevent your thoughts from being disrupted. Above is an example
Favorite

Have you ever wanted to apply a function on multiple data within a directory? Instead of manually typing different data’s name, why don’t we loop through all the data in that directory? Below is the code snippet for exactly that
This is especially useful when you need to apply one function to more than 5 data. Now, all we need to do is to run, for example,
python <a href="http://process.py/" data-attribute-index="2">process.py</a>
to apply one script to multiple data!
Favorite

With Python 3.9, you can use type hint such as dict[], list[], tuple[] without import Dict, List, Tuple from the typing library! It is convenient to use typing without importing from external libary
Favorite

If you want to concurrently execute tasks on separate CPUs to run faster, consider using joblib.Parallel. It allows you to easily execute several tasks at once, with each task using its own processor.
Here is the doc.
Favorite

Have you ever had a function in your class that doesn’t access any properties of a class but makes sense that it belongs to the class? You might find it redundant to instantiate the class to use that function. That is when you can turn your function into a static method.
All you need to turn your function into a static method is the decorator ‘@staticmethod’. Now you can use the function without adding the attributes required for a new instance. Find the example below.
Favorite

If you want to confirm whether a variable is a number without caring whether it is a float or an integer, numbers. Number is what you can use to check.
This is a built-in Python library. Try it out if you are looking for something similar.
Link to the source code.
Favorite

Are you using for i in range(len(array)) to access both the index and the value of the array? If so, use enumerate instead. It produces the same result but it is much cleaner. Above is an example
Favorite

If you want to compare the execution time between 2 functions, the easiest method to measure the time is timeit.timeit. You can also specify the number of times you want to rerun your function to get a better estimation of the time. Below is the code
Something you might not know: it is faster to use list range than to use list comprehension.
Favorite

To merge 2 Python list into a list, instead of using append, use extend instead
Favorite