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Pandas styling Exercises: Write a Pandas program to highlight the minimum value in each column

Pandas styling: Exercise-4 with Solution

Create a dataframe of ten rows, four columns with random values. Write a Pandas program to highlight the minimum value in each column.

Sample Solution :

Python Code :

import pandas as pd
import numpy as np
np.random.seed(24)
df = pd.DataFrame({'A': np.linspace(1, 10, 10)})
df = pd.concat([df, pd.DataFrame(np.random.randn(10, 4), columns=list('BCDE'))],
               axis=1)
df.iloc[0, 2] = np.nan
df.iloc[3, 3] = np.nan
df.iloc[4, 1] = np.nan
df.iloc[9, 4] = np.nan
print("Original array:")
print(df)
def highlight_min(s):
    '''
    highlight the minimum in a Series red.
    '''
    is_max = s == s.min()
    return ['background-color: red' if v else '' for v in is_max]

print("\nHighlight the minimum value in each column:")
df.style.apply(highlight_min,subset=pd.IndexSlice[:, ['B', 'C', 'D', 'E']])

Original array:

Original array:
      A         B         C         D         E
0   1.0  1.329212       NaN -0.316280 -0.990810
1   2.0 -1.070816 -1.438713  0.564417  0.295722
2   3.0 -1.626404  0.219565  0.678805  1.889273
3   4.0  0.961538  0.104011       NaN  0.850229
4   5.0       NaN  1.057737  0.165562  0.515018
5   6.0 -1.336936  0.562861  1.392855 -0.063328
6   7.0  0.121668  1.207603 -0.002040  1.627796
7   8.0  0.354493  1.037528 -0.385684  0.519818
8   9.0  1.686583 -1.325963  1.428984 -2.089354
9  10.0 -0.129820  0.631523 -0.586538       NaN

Highlight the minimum value in each column:

Sample Output:

Python Pandas: pandas styling exercise-4 output

Download the Jupyter Notebook from here.

Python Code Editor:


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Previous: Create a dataframe of ten rows, four columns with random values. Write a Pandas program to highlight the maximum value in each column.
Next: Create a dataframe of ten rows, four columns with random values. Write a Pandas program to highlight the maximum value in last two columns.

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Python: Tips of the Day

Python: How do I copy a file in Python?

shutil has many methods you can use. One of which is:

from shutil import copyfile
copyfile(src, dst)
  • Copy the contents of the file named src to a file named dst.
  • The destination location must be writable; otherwise, an IOError exception will be raised.
  • If dst already exists, it will be replaced.
  • Special files such as character or block devices and pipes cannot be copied with this function.
  • With copy, src and dst are path names given as strings.

If you use os.path operations, use copy rather than copyfile. copyfile will only accept strings.

Ref: https://bit.ly/3e2Y1G0