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/ python_tuples.py
Created
April 29, 2021 04:47
— forked from ShyamaSankar/python_tuples.py
Cheat sheet for Python tuples
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| #### Tuple creation ##### | |
| # Create a tuple, also called tuple packing. | |
| numbers = 1, 2 | |
| print(numbers) # Output: (1, 2) <- Note that it is represented with an enclosing paranthesis | |
| # Create tuple with paranthesis. | |
| numbers = (1, 2, 3) | |
| print(numbers) # Output: (1, 2, 3) | |
| # Create an empty tuple. | |
| numbers = () | |
| print(numbers) # Output: () |
pandoraxcc
/ pandas_cheat.py
Created
April 6, 2021 04:57
— forked from pohzipohzi/pandas_cheat.py
Cheat sheet for the python pandas library
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| import numpy as np | |
| import pandas as pd | |
| #### creating dataframes, adding and dropping columns | |
| df = pd.DataFrame(np.arange(1,10).reshape(3,3),['A','B','C'],['w','x','y']) | |
| df.columns = ['W','X','Y'] # change column names | |
| df['Z']=df['X']+df['Y'] # new column with values X+Y | |
| df['XX']=df.apply(lambda row: row['X']*2, axis=1) # new column with values twice of column X | |
| df['YY']=1 # new column of ones |