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import smtplib
from email.mime.text import MIMEText
from email.mime.multipart import MIMEMultipart
from selenium import webdriver
from selenium.webdriver.common.by import By

# Only CodeFriends registered emails can receive
receiver_email = "youremail@example.com"

# Retrieve weather information from the National Weather Service
def get_weather():
    # Run Chrome driver
    driver = webdriver.Chrome()
    
    # Move to the National Weather Service weather information page
    url = "https://www.weather.gov/"
    driver.get(url)

    # Get temperature and feels like temperature information
    temperature_element = driver.find_element(By.CLASS_NAME, 'myforecast-current-lrg')
    feels_like_element = driver.find_element(By.CLASS_NAME, 'myforecast-current-sm')

    # Save temperature and feels like temperature information
    temperature = temperature_element.text
    feels_like = feels_like_element.text
    
    driver.quit()

    # Return temperature and feels like temperature information as a tuple
    weather_info = (temperature, feels_like)
    return weather_info


# Send weather information via email
def send_email(weather_info):
    sender_email = "admin_email"
    sender_password = "admin_password"
    smtp_server = "smtp.gmail.com"
    port = 587
    
    # Compose email
    msg = MIMEMultipart('alternative')

    msg['Subject'] = "Today's Weather Information"
    msg['From'] = sender_email
    msg['To'] = receiver_email

    body = f"""
    <html>
      <body>
        <h1>Today's Weather Information</h1>
        <p>Temperature: {weather_info[0]}</p>
        <p>Feels Like: {weather_info[1]}</p>
      </body>
    </html>
    """

    # Add MIME part
    html_email = MIMEText(body, 'html')
    msg.attach(html_email)

    # Connect to the SMTP server
    server = smtplib.SMTP(smtp_server, port)

    # Connect with TLS (email encryption)
    server.starttls()

    # Email login
    server.login(sender_email, sender_password)

    # Convert email message to a string
    text = msg.as_string()
    
    try:
        # Send email
        server.sendmail(sender_email, receiver_email, text)

        print("Email has been sent successfully!")
    except Exception as e:
        print(f"Error occurred while sending email: {e}")
    finally:
        server.quit()


# Retrieve weather information
weather_info = get_weather()

# Send email
send_email(weather_info)

# Sending Weather Information via Email After Web Crawling

Are you spending unnecessary time searching and organizing large amounts of information?

By building a system that automatically collects and processes the necessary information from the internet and sends notification emails, you can greatly enhance your productivity.

No need to establish a separate data collection or notification system.

In this lesson, we will explore how to fetch `weather information` from the weather bureau's website and send the collected data via `email`.  

<br />

```python title="Periodically Sending Crawled Weather Information via Email"
import smtplib
from email.mime.text import MIMEText
from email.mime.multipart import MIMEMultipart
from selenium import webdriver
from selenium.webdriver.common.by import By

# Only emails registered with CodeFriends can receive emails
receiver_email = "youremail@example.com"

# Fetch weather information
def get_weather():
    # Launch Chrome driver
    driver = webdriver.Chrome()
    
    # Navigate to the weather bureau's weather information page
    url = "https://www.weather.gov"
    driver.get(url)

    # Get temperature and feels-like temperature elements
    temperature_element = driver.find_element(By.CLASS_NAME, 'temp')
    feels_like_element = driver.find_element(By.CLASS_NAME, 'feels-like')

    # Store temperature and feels-like temperature information
    temperature = temperature_element.text
    feels_like = feels_like_element.text
    
    driver.quit()

    # Return temperature and feels-like temperature as a tuple
    weather_info = (temperature, feels_like)
    return weather_info


# Send weather information via email
def send_email(weather_info):
    sender_email = "admin_email"
    sender_password = "admin_password"
    smtp_server = "smtp.gmail.com"
    port = 587
    
    # Create the email
    msg = MIMEMultipart('alternative')

    msg['Subject'] = "Today's Weather Information"
    msg['From'] = sender_email
    msg['To'] = receiver_email

    body = f"""
    <html>
      <body>
        <h1>Today's Weather Information</h1>
        <p>Temperature: {weather_info[0]}</p>
        <p>Feels Like: {weather_info[1]}</p>
      </body>
    </html>
    """

    # Attach the MIME part
    html_email = MIMEText(body, 'html')
    msg.attach(html_email)

    # Connect to the SMTP server
    server = smtplib.SMTP(smtp_server, port)

    # Initiate TLS (email encryption)
    server.starttls()

    # Login to the email account
    server.login(sender_email, sender_password)

    # Convert the message to a string
    text = msg.as_string()
    
    try:
        # Send the email
        server.sendmail(sender_email, receiver_email, text)

        print("Email sent successfully!")
    except Exception as e:
        print(f"Error occurred while sending email: {e}")
    finally:
        server.quit()


# Get weather information
weather_info = get_weather()

# Send the email
send_email(weather_info)
```

<br />

The above code uses Selenium to crawl data from the web and send the collected data via email.

If you use the `schedule` library to execute this process periodically, you can receive weather information emails at a specific time every day.

```python title="Example Code to Send Weather Information Email Every Hour"
import schedule

# Use schedule library to send weather information email every hour
schedule.every().hour.do(send_email, get_weather())

# For security reasons, periodic email sending does not work in the practice environment
while True:
    schedule.run_pending()
```

The library needed for crawling dynamic data, such as weather information from the weather service, is selenium.

email

Sending Weather Information via Email After Web Crawling

What library is needed for crawling dynamic data, such as weather information from the weather service?