Uniform currencies

In this exercise and throughout this chapter, you will be working with a retail banking dataset stored in the banking DataFrame. The dataset contains data on the amount of money stored in accounts (acct_amount), their currency (acct_cur), amount invested (inv_amount), account opening date (account_opened), and last transaction date (last_transaction) that were consolidated from American and European branches.

You are tasked with understanding the average account size and how investments vary by the size of account, however in order to produce this analysis accurately, you first need to unify the currency amount into dollars. The pandas package has been imported as pd, and the banking DataFrame is in your environment.

Bu egzersiz

Cleaning Data in Python

kursunun bir parçasıdır

Kursu Görüntüle

Egzersiz talimatları

Find the rows of acct_cur in banking that are equal to 'euro' and store them in the variable acct_eu.
Find all the rows of acct_amount in banking that fit the acct_eu condition, and convert them to USD by multiplying them with 1.1.
Find all the rows of acct_cur in banking that fit the acct_eu condition, set them to 'dollar'.

Uygulamalı interaktif egzersiz

Bu örnek kodu tamamlayarak bu egzersizi bitirin.

# Find values of acct_cur that are equal to 'euro'
acct_eu = banking['____'] == '____'

# Convert acct_amount where it is in euro to dollars
banking.loc[____, '____'] = banking.loc[____, '____'] * ____

# Unify acct_cur column by changing 'euro' values to 'dollar'
banking.loc[____, '____'] = ____

# Assert that only dollar currency remains
assert banking['acct_cur'].unique() == 'dollar'

Kodu Düzenle ve Çalıştır

Bu egzersiz

Cleaning Data in Python

kursunun bir parçasıdır

IntermediárioNível de habilidade

4.8+

Kursa Ücretsiz Başlayın

In this chapter, you'll learn how to overcome some of the most common dirty data problems. You'll convert data types, apply range constraints to remove future data points, and remove duplicated data points to avoid double-counting.

Exercise 1: Data type constraints Exercise 2: Common data types Exercise 3: Numeric data or ... ?Exercise 4: Summing strings and concatenating numbers Exercise 5: Data range constraints Exercise 6: Tire size constraints Exercise 7: Back to the future Exercise 8: Uniqueness constraints Exercise 9: How big is your subset?Exercise 10: Finding duplicates Exercise 11: Treating duplicates

Categorical and text data can often be some of the messiest parts of a dataset due to their unstructured nature. In this chapter, you’ll learn how to fix whitespace and capitalization inconsistencies in category labels, collapse multiple categories into one, and reformat strings for consistency.

Exercise 1: Membership constraints Exercise 2: Members only Exercise 3: Finding consistency Exercise 4: Categorical variables Exercise 5: Categories of errors Exercise 6: Inconsistent categories Exercise 7: Remapping categories Exercise 8: Cleaning text data Exercise 9: Removing titles and taking names Exercise 10: Keeping it descriptive

In this chapter, you'll dive into more advanced data cleaning problems, such as ensuring that weights are all written in kilograms instead of pounds. You'll also gain invaluable skills that will help you verify that values have been added correctly, and that missing values don't negatively impact your analyses.

Exercise 1: Uniformity Exercise 2: Ambiguous dates Exercise 3: Uniform currencies

Geçerli Egzersiz

Exercise 4: Uniform dates Exercise 5: Cross field validation Exercise 6: Cross field or no cross field?Exercise 7: How's our data integrity?Exercise 8: Completeness Exercise 9: Is this missing at random?Exercise 10: Missing investors Exercise 11: Follow the money

Record linkage is a powerful technique used to merge multiple datasets together, used when values have typos or different spellings. In this chapter, you'll learn how to link records by calculating the similarity between strings—you'll then use your new skills to join two restaurant review datasets into one clean master dataset.

Exercise 1: Comparing strings Exercise 2: Minimum edit distance Exercise 3: The cutoff point Exercise 4: Remapping categories II Exercise 5: Generating pairs Exercise 6: To link or not to link?Exercise 7: Pairs of restaurants Exercise 8: Similar restaurants Exercise 9: Linking DataFrames Exercise 10: Getting the right index Exercise 11: Linking them together!Exercise 12: Congratulations!