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Pandas First Steps
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Pandas First Steps

Pandas First Steps

1. The Very First Steps
What is pandas? SeriesChallenge: Creating a SeriesDataFrameQuiz: Creating a SeriesQuiz: Creating a DataFrameAdding a New ColumnInserting a New ColumnDeleting a Row/Column Quiz: Matching the FunctionsWorking with ColumnsQuiz: Extracting Columnsiloc BasicsChallenge: Using iloc
2. Reading Files in Pandas
CSV FilesTXT FilesQuiz: Working with FilesQuiz: Accessing the Columns
3. Analyzing the Data
Viewing the DataQuiz: Using HeadQuiz: Head, Tail, and SampleExploring the DatasetColumn Names and Data TypesFinding Null ValuesQuiz: Identifying Null ValuesChallenge: Dropping Null ValuesChallenge: Filling Null ValuesQuiz: Null ValuesDescribing the Datamax() and min()Quiz: Statistical Operationssum() and count()Unique Values

book
Challenge: Using iloc

The DataFrame we are working with:

You can also use negative indexing to access rows in the DataFrame. Negative indexing starts from the end of the DataFrame: index -1 points to the last row, -2 to the second to last, and so on.

To access the seventh row (which refers to Latvia), you can use either index 6 or -1.


              
123456

            
import pandas

countries_data = {'country' : ['Thailand', 'Philippines', 'Monaco', 'Malta', 'Sweden', 'Paraguay', 'Latvia'], 'continent' : ['Asia', 'Asia', 'Europe', 'Europe', 'Europe', 'South America', 'Europe'], 'capital':['Bangkok', 'Manila', 'Monaco', 'Valletta', 'Stockholm', 'Asuncion', 'Riga']}
countries = pandas.DataFrame(countries_data)
# Accessing to the seventh row using negative indexing
print(countries.iloc[-1])
copy

Running the above code will return the row highlighted in the image below:

Tarefa
test

Swipe to begin your solution

  1. Display all the details from the DataFrame for the Audi A1 model from the year 2017. To do this, you'll need to use positive indexing.
  2. Display all the details from the DataFrame for the Audi A1 model from the year 2016 using negative indexing.
  3. Display all the details from the DataFrame for the Audi A3 model using positive indexing.

Make sure to use the iloc attribute.

Task Table

Solução

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Tudo estava claro?

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Seção 1. Capítulo 14
toggle bottom row

book
Challenge: Using iloc

The DataFrame we are working with:

You can also use negative indexing to access rows in the DataFrame. Negative indexing starts from the end of the DataFrame: index -1 points to the last row, -2 to the second to last, and so on.

To access the seventh row (which refers to Latvia), you can use either index 6 or -1.


              
123456

            
import pandas

countries_data = {'country' : ['Thailand', 'Philippines', 'Monaco', 'Malta', 'Sweden', 'Paraguay', 'Latvia'], 'continent' : ['Asia', 'Asia', 'Europe', 'Europe', 'Europe', 'South America', 'Europe'], 'capital':['Bangkok', 'Manila', 'Monaco', 'Valletta', 'Stockholm', 'Asuncion', 'Riga']}
countries = pandas.DataFrame(countries_data)
# Accessing to the seventh row using negative indexing
print(countries.iloc[-1])
copy

Running the above code will return the row highlighted in the image below:

Tarefa
test

Swipe to begin your solution

  1. Display all the details from the DataFrame for the Audi A1 model from the year 2017. To do this, you'll need to use positive indexing.
  2. Display all the details from the DataFrame for the Audi A1 model from the year 2016 using negative indexing.
  3. Display all the details from the DataFrame for the Audi A3 model using positive indexing.

Make sure to use the iloc attribute.

Task Table

Solução

Switch to desktopMude para o desktop para praticar no mundo realContinue de onde você está usando uma das opções abaixo
Tudo estava claro?

Como podemos melhorá-lo?

Obrigado pelo seu feedback!

Seção 1. Capítulo 14
Switch to desktopMude para o desktop para praticar no mundo realContinue de onde você está usando uma das opções abaixo
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