Minimum & Maximum in Python – Get Min & Max in List & DataFrame (4 Examples)

This article illustrates how to calculate the maximum and minimum in the Python programming language.

Example 1: Calculating the Minimum & Maximum of a List Object

```my_lt = [10, 6, 2, 2, 15, 20, 3, 7, 4] # Constructing a list in Python print(my_lt) # [10, 6, 2, 2, 15, 20, 3, 7, 4]```
```print(min(my_lt)) # Computing the min of a list # 2```
```print(max(my_lt)) # Computing the max of a list # 20```

Example 2: Calculating the Minimum & Maximum of the Columns in a pandas DataFrame

`import pandas as pd # Import pandas`
```my_df = pd.DataFrame({'A':range(10, 17), # Constructing a pandas DataFrame 'B':[6, 1, 8, 5, 3, 8, 9], 'C':range(2, 9), 'GRP':['gr1', 'gr2', 'gr1', 'gr3', 'gr1', 'gr2', 'gr3']}) print(my_df) # A B C GRP # 0 10 6 2 gr1 # 1 11 1 3 gr2 # 2 12 8 4 gr1 # 3 13 5 5 gr3 # 4 14 3 6 gr1 # 5 15 8 7 gr2 # 6 16 9 8 gr3```
```print(my_df.min()) # Computing the min of all columns # A 10 # B 1 # C 2 # GRP gr1 # dtype: object```
```print(my_df.max()) # Computing the max of all columns # A 16 # B 9 # C 8 # GRP gr3 # dtype: object```

Example 3: Calculating the Minimum & Maximum of the Columns in a pandas DataFrame by Group

```print(my_df.groupby('GRP').min()) # Computing the column minima by group # A B C # GRP # gr1 10 3 2 # gr2 11 1 3 # gr3 13 5 5```
```print(my_df.groupby('GRP').max()) # Computing the column maxima by group # A B C # GRP # gr1 14 8 6 # gr2 15 8 7 # gr3 16 9 8```

Example 4: Calculating the Minimum & Maximum of the Rows in a pandas DataFrame

```print(my_df.min(axis = 1)) # Computing the min of all rows # 0 2 # 1 1 # 2 4 # 3 5 # 4 3 # 5 7 # 6 8 # dtype: int64```
```print(my_df.max(axis = 1)) # Computing the max of all rows # 0 10 # 1 11 # 2 12 # 3 13 # 4 14 # 5 15 # 6 16 # dtype: int64```