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Learn Integrating External Data with Accounting Records | Retrieving and Reporting Financial Data
Python for Accountants

bookIntegrating External Data with Accounting Records

Integrating external market data with your company's accounting records can provide a deeper, more contextual understanding of financial performance. By combining stock prices, interest rates, or industry indicators with internal transaction data, you can better assess how market movements influence your organization's assets, liabilities, and overall financial health. This integration supports more informed decision-making, improved risk management, and the ability to benchmark performance against external factors.

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import pandas as pd # Example internal transaction records transactions = pd.DataFrame({ "date": ["2024-06-01", "2024-06-02", "2024-06-03"], "ticker": ["AAPL", "AAPL", "AAPL"], "shares": [10, 5, 8] }) # Example external stock price data stock_prices = pd.DataFrame({ "date": ["2024-06-01", "2024-06-02", "2024-06-03"], "AAPL_price": [190, 193, 192] }) # Merge on the 'date' column merged = pd.merge(transactions, stock_prices, on="date", how="left") print(merged)
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When integrating data from different sources, it is essential to align records by date, since both internal transactions and external market data are typically time-based. The merge method in pandas is commonly used for this purpose. Sometimes, you may encounter missing values if, for example, there is no market data for a specific transaction date. You can address missing values using methods like fillna() to substitute them with appropriate defaults or interpolate missing data, ensuring your analysis remains consistent and reliable.

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import pandas as pd # Company holdings on specific dates holdings = pd.DataFrame({ "date": ["2024-06-01", "2024-06-02", "2024-06-03"], "shares": [10, 15, 23] }) # Corresponding external market prices stock_prices = pd.DataFrame({ "date": ["2024-06-01", "2024-06-02", "2024-06-03"], "price": [190, 193, 192] }) # Merge and calculate market value merged = pd.merge(holdings, stock_prices, on="date", how="left") merged["market_value"] = merged["shares"] * merged["price"] print(merged[["date", "market_value"]])
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1. Why might an accountant want to integrate external financial data with internal records?

2. What pandas method is commonly used to align data from different sources?

3. Fill in the blanks to merge and align two DataFrames on a date column.

question mark

Why might an accountant want to integrate external financial data with internal records?

Select the correct answer

question mark

What pandas method is commonly used to align data from different sources?

Select the correct answer

question-icon

Fill in the blanks to merge and align two DataFrames on a date column.

import pandas as pd df1 = pd.DataFrame({"date": ["2024-01-01"], "amount": [100]}) df2 = pd.DataFrame({"date": ["2024-01-01"], "rate": [1.5]}) aligned = pd.(df1, df2, on="", how="left") print(aligned)
date amount rate
0 2024-01-01 100 1.5

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SectionΒ 3. ChapterΒ 1

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bookIntegrating External Data with Accounting Records

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Integrating external market data with your company's accounting records can provide a deeper, more contextual understanding of financial performance. By combining stock prices, interest rates, or industry indicators with internal transaction data, you can better assess how market movements influence your organization's assets, liabilities, and overall financial health. This integration supports more informed decision-making, improved risk management, and the ability to benchmark performance against external factors.

123456789101112131415161718
import pandas as pd # Example internal transaction records transactions = pd.DataFrame({ "date": ["2024-06-01", "2024-06-02", "2024-06-03"], "ticker": ["AAPL", "AAPL", "AAPL"], "shares": [10, 5, 8] }) # Example external stock price data stock_prices = pd.DataFrame({ "date": ["2024-06-01", "2024-06-02", "2024-06-03"], "AAPL_price": [190, 193, 192] }) # Merge on the 'date' column merged = pd.merge(transactions, stock_prices, on="date", how="left") print(merged)
copy

When integrating data from different sources, it is essential to align records by date, since both internal transactions and external market data are typically time-based. The merge method in pandas is commonly used for this purpose. Sometimes, you may encounter missing values if, for example, there is no market data for a specific transaction date. You can address missing values using methods like fillna() to substitute them with appropriate defaults or interpolate missing data, ensuring your analysis remains consistent and reliable.

123456789101112131415161718
import pandas as pd # Company holdings on specific dates holdings = pd.DataFrame({ "date": ["2024-06-01", "2024-06-02", "2024-06-03"], "shares": [10, 15, 23] }) # Corresponding external market prices stock_prices = pd.DataFrame({ "date": ["2024-06-01", "2024-06-02", "2024-06-03"], "price": [190, 193, 192] }) # Merge and calculate market value merged = pd.merge(holdings, stock_prices, on="date", how="left") merged["market_value"] = merged["shares"] * merged["price"] print(merged[["date", "market_value"]])
copy

1. Why might an accountant want to integrate external financial data with internal records?

2. What pandas method is commonly used to align data from different sources?

3. Fill in the blanks to merge and align two DataFrames on a date column.

question mark

Why might an accountant want to integrate external financial data with internal records?

Select the correct answer

question mark

What pandas method is commonly used to align data from different sources?

Select the correct answer

question-icon

Fill in the blanks to merge and align two DataFrames on a date column.

import pandas as pd df1 = pd.DataFrame({"date": ["2024-01-01"], "amount": [100]}) df2 = pd.DataFrame({"date": ["2024-01-01"], "rate": [1.5]}) aligned = pd.(df1, df2, on="", how="left") print(aligned)
date amount rate
0 2024-01-01 100 1.5

Click or drag`n`drop items and fill in the blanks

Everything was clear?

How can we improve it?

Thanks for your feedback!

SectionΒ 3. ChapterΒ 1
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