Tag: Numbers & precision
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Python round and banker’s rounding: Why round(2.5) returns 2
“round” rounds Python numbers: Remember, .5 goes to the nearest *even* value:
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Python numeric literals: Using underscores to group digits
Want to make Python numbers more readable? Use _ between digits (not at the start or end):
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Understanding bitwise operations in Python
Have you ever wondered about bitwise operations in Python? They’re not that common nowadays, but they are still in the language, and can be useful in some cases. A subscriber to my “Better developers” newsletter asked me to explain these. I made a video doing so: Here’s the Jupyter notebook I used in creating the…
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2+2 might be 4, but what is True+True?
In Python, we know that we can add two integers together: >> 2 + 2 4 And of course, we can add two strings together: >> ‘a’ + ‘b’ ‘ab’ We can even add two lists together: >> [1,2,3] + [4,5,6] [1, 2, 3, 4, 5, 6] But what happens when you add two booleans…
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Fun with floats
I’m in Shanghai, and before I left to teach this morning, I decided to check the weather. I knew that it would be hot, but I wanted to double-check that it wasn’t going to rain — a rarity during Israeli summers, but not too unusual in Shanghai. I entered “shanghai weather” into DuckDuckGo, and got…