Python

index = df.index
number_of_rows = len(index)

df = pd.DataFrame({"Letters": ["a", "b", "c"], "Numbers": [1, 2, 3]})
index = df.index
number_of_rows = len(index)

rows_count = len(df.index)
rows_count = len(df.axes[0])
rows_count = df.shape[0]
rows_count = df.count()[0]

>>> df.count(axis='columns')
0    3
1    2
2    3
3    3
4    3
dtype: int64

>>> df[df['LastName'] == 'Smith'].index
Int64Index([1], dtype='int64')

number_of_rows = len(df)

len(df)

#print
print('row = ' + str(len(df)))

len(df)

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