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Questions - logic

Making a little angular resolution calculator in JS but it returns NaN

So, I'm in an astronomy class, and don't have a scientific calculator yet, so as a side project practice sometimes I'll translate a math question that would otherwise be tedious into a JS program so i...
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AstralV

javascript

logic

calculator

trigonometry

Votes: 0

Answers: 0

need to understand how the code is working

num = 2 if num > 1: for i in range(2, num): if (num % i) == 0: print(num, "is not a prime number") break else: print(num, "is a prime ...
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Nithin

algorithm

loops

logic

Votes: 0

Answers: 2

Latest Answer

When num == 0 the for loop never enters since range(2, 2) just like range(0) is zero. Now, your for loop has an else clause. This else clause hits in 2 cases: The for loop runs in full to the end with...
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user1984

The for loop in my python function is not running

My for loop inside the function "play()" is not getting executed at runtime. def play(): print("1") for files in os.listdir(os.getcwd()): if files.endswith("mp...
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Lincoln Jones

python

pygame

logic

Votes: 0

Answers: 2

Latest Answer

pygame seems a poor choice for a media player, unless you have it loaded for another reason. I'd suggest you look on SO for vlc.py or Gstreamer examples. That said, the player can only play one thing ...
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Rolf of Saxony

Regular expression in python to replace last two digits of a column value where if last two digits are 30 then replace it with 50

I have the following data frame abc=pd.DataFrame() abc['Col_A']=[1900,1200,1230,1130,1300,0330] abc Col_A 0 1900 1 1200 2 1230 3 1130 4 1300 5 0330 from the above data frame I want ...
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Annu

python

pandas

dataframe

logic

python-re

Votes: 0

Answers: 1

Latest Answer

Assuming your Col_A values are actually strings, then we can use str.replace here: df["Col_A"] = df["Col_A"].str.replace(r'30$', '50') Note that values like 0330 will only retain ...
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Tim Biegeleisen

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