DataFrame structure (index, columns, values) in Data Analysis Python - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to get the row labels of the DataFrame.

Data Analysis Python

row_labels = df.[1]

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Avalues

Bindex

Ccolumns

Dshape

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'columns' instead of 'index' to get row labels.

Trying to use 'values' which gives the data, not labels.

The index attribute gives the row labels of a DataFrame.

2fill in blank

medium

Complete the code to get the column labels of the DataFrame.

Data Analysis Python

column_labels = df.[1]

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Akeys

Bindex

Cvalues

Dcolumns

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'index' which is for rows, not columns.

Using 'values' which gives the data, not labels.

The columns attribute gives the column labels of a DataFrame.

3fill in blank

hard

Fix the error in the code to get the data values of the DataFrame.

Data Analysis Python

data = df.[1]()

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Ato_numpy

Bget_values

Cdata

Dvalues

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'values()' as if it were a method (it's an attribute).

Using deprecated 'get_values()' method.

The to_numpy() method returns the data values as a NumPy array. The values attribute is not a method, and get_values() is deprecated.

4fill in blank

hard

Fill both blanks to create a DataFrame with specified index and columns.

Data Analysis Python

df = pd.DataFrame(data, index=[1], columns=[2])

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A['row1', 'row2']

B['col1', 'col2']

C['a', 'b']

D['x', 'y']

Attempts:

3 left

💡 Hint

Common Mistakes

Swapping index and columns values.

Using labels that don't match data dimensions.

The index parameter sets row labels, and columns sets column labels. Here, ['row1', 'row2'] are row labels and ['col1', 'col2'] are column labels.

5fill in blank

hard

Fill all three blanks to create a DataFrame from a dictionary with correct index and columns.

Data Analysis Python

df = pd.DataFrame([1], index=[2], columns=[3])

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A{'A': [1, 2], 'B': [3, 4]}

B['row1', 'row2']

C['A', 'B']

D{'X': [5, 6], 'Y': [7, 8]}

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up data dictionary and labels.

Using column labels that don't match dictionary keys.

The first blank is the data dictionary, the second is the row labels, and the third is the column labels matching the dictionary keys.