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Given the following text description, write Python code to implement the functionality described below step by step
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Description:
 stemgraphic quickstart with numbers
Import stem_graphic from stemgraphic (shortcut) or explicitely from stemgraphic.num.
Step1:  Load a data frame
Step2:  Select a column, or pass the whole dataframe if you want stem_graphic to select the first numerical column.
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Python Code:
%matplotlib inline
import pandas as pd
from stemgraphic import stem_graphic
Explanation: stemgraphic quickstart with numbers
Import stem_graphic from stemgraphic (shortcut) or explicitely from stemgraphic.num.
End of explanation
df = pd.read_csv('../iris.csv')
df.describe()
Explanation: Load a data frame
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stem_graphic(df['sepal_length']);
Explanation: Select a column, or pass the whole dataframe if you want stem_graphic to select the first numerical column.
End of explanation
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