How to Do Elementwise Math in Python
This video shows how to perform elementwise math operations using base python lists, numpy arrays and on the columns of pandas dataframes.
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Code used in this Python Code Clip:
Elementwise math on two lists using zip
list1 = [1,2,3,4,5]
list2 = [6,7,8,9,10]
elementwise_result = [l1 + l2 for l1, l2 in zip(list1, list2)]
elementwise_result
Elementwise math using numpy arrays
import numpy as np
list1 = np.array(list1)
list2 = np.array(list2)
list1 + list2
Elementwise math on columns in pandas data frames
import pandas as pd
df = pd.DataFrame(data = {"list1": list1, "list2" : list2})
df.list1 + df.list2
Note: YouTube does not allow greater than or less than symbols in the text description, so the code above will not be exactly the same as the code shown in the video! I will use Unicode large ＜ and ＞ symbols in place of the standard sized ones. .
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