week 3 Finance with Python - access the market data
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Week 3: Time Series Analysis and Market Data
Learning Material:
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Day 1: Time Series Data
- Objective: Learn about time series data and its importance in finance.
- Topics: Time series data, components of time series, and financial applications.
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Day 2: Working with Time Series Data in Python
- Objective: Learn how to manipulate and analyze time series data in Python.
- Topics: Time series data handling, visualization, and Python libraries like Pandas.
- Code Example: Basic time series analysis in Python.
import pandas as pd import matplotlib.pyplot as plt # Load time series data data = pd.read_csv("time_series_data.csv", parse_dates=["Date"], index_col="Date") # Plot time series plt.figure(figsize=(10, 6)) plt.plot(data.index, data["Price"]) plt.xlabel("Date") plt.ylabel("Price") plt.title("Stock Price Time Series") plt.show()
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Day 3: Market Data Sources
- Objective: Explore different sources of financial market data.
- Topics: Data sources, APIs, and data providers.
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Day 4: Accessing Market Data with Python
- Objective: Learn how to retrieve and use market data with Python libraries like yfinance or Alpha Vantage.
- Topics: API usage, data retrieval, and Python libraries for market data.
- Code Example: Accessing market data using yfinance.
- here is example from data in Bank Republik Indonesia
# Import necessary librariesimport yfinance as yf # For fetching stock datafrom sklearn.linear_model import LinearRegression # For creating a linear regression modelimport pandas as pd # For data manipulation and analysisimport numpy as np # For numerical operationsimport matplotlib.pyplot as plt # For data visualization
# Define the stock symbol and fetch historical datastock_symbol = 'BBRI.JK' # Example stock symbolstock = yf.Ticker(stock_symbol) # Creating a Ticker object for the stock symbolhistorical_data = stock.history(period="5y") # Fetching historical data for the past 5 years
# Considering only the 'Close' price for modelingdata = historical_data[['Close']] # Extracting 'Close' prices from the historical datadata.reset_index(level=0, inplace=True) # Resetting the index and converting date to a columndata.columns = ['Date', 'Price'] # Renaming columns for clarity
# Creating features (using only one feature for simplicity - the index)data['Index'] = np.arange(len(data)) # Adding an 'Index' column to the DataFrame
# Splitting the data into training and testing setssplit_index = int(0.8 * len(data)) # Determining the split index for training and testingtrain_data = data.iloc[:split_index] # Creating the training datatest_data = data.iloc[split_index:] # Creating the testing data
# Creating and fitting the linear regression modelmodel = LinearRegression() # Creating a Linear Regression modelmodel.fit(train_data[['Index']], train_data['Price']) # Fitting the model with training data
# Making predictions using the modeltest_data['Predictions'] = model.predict(test_data[['Index']]) # Making predictions for the test data
# Visualizing the predictions and actual valuesplt.figure(figsize=(12, 6)) # Creating a plot figureplt.title('Stock Price Prediction') # Setting the title of the plotplt.xlabel('Index') # Labeling the x-axisplt.ylabel('Stock Price') # Labeling the y-axisplt.plot(train_data['Date'], train_data['Price'], label='Training Data') # Plotting training dataplt.plot(test_data['Date'], test_data['Price'], label='Actual Stock Price') # Plotting actual stock pricesplt.plot(test_data['Date'], test_data['Predictions'], label='Predicted Stock Price', linestyle='dashed') # Plotting predicted stock pricesplt.legend() # Adding a legend to the plotplt.show() # Displaying the plot
import yfinance as yf # Define the stock symbol and date range stock_symbol = "AAPL" start_date = "2020-01-01" end_date = "2022-12-31" # Download historical data data = yf.download(stock_symbol, start=start_date, end=end_date)
- Day 5: Exercise
- Objective: Retrieve historical stock prices, analyze market data, and visualize price trends using Python.
Note: Week 3 focuses on time series analysis and accessing financial market data with Python.
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