pandas number of observations
### first method ###
len(df)
### second method ###
len(df.index)
### third method ###
df.shape[0]pandas number of observations
### first method ###
len(df)
### second method ###
len(df.index)
### third method ###
df.shape[0]how to get the number of rows and columns in a numpy array
c = np.array([[1, 2, 3],[6, 5, 4]])
'''
c returns the following matrix
[1, 2, 3]
[4, 5, 6]
'''
print(c.shape)
#returns: (2,3) (number of rows, number of columns)Copyright © 2021 Codeinu
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