CyberKeeda In Social Media
Showing posts with label Python Modules. Show all posts
Showing posts with label Python Modules. Show all posts

Python - Send HTML Table as email body.



SMTPLIB

A python base package to send emails.


Within this post, we will cover.

  • How to use prettytable library to create tabular data in console.
  • How to convert prettytable tabular data output in HTML format
  • How we can send HTML email using Python.
  • How can we integrate mime with email.
  • Code snippet to send HTML email along with Texr
  • How to send email as MultiPart message content ( Text + HTML) 

We will start with the use case:

  • I have a html table and and a Link that must be within the same email body and not as an attachment.
  • So for now, i am using PreetyTable to provide output of my table in HTML format.

 

Intended Table.


FirstnameLastnameAge
JillSmith50
EveJackson94
JohnDoe80


How to create Tabular data in CLI using prettytable.


mytable.py
from prettytable import PrettyTable
    
tabular_fields = ["Firstname", "Lastname", "Age"]
tabular_table = PrettyTable()
tabular_table.field_names = tabular_fields 
tabular_table.add_row(["Jill","Smith", 50])
tabular_table.add_row(["Eve","Jackson", 94])
tabular_table.add_row(["John", "Doe", 80])

>>> print(tabular_table)
+-----------+----------+-----+
| Firstname | Lastname | Age |
+-----------+----------+-----+
|    Jill   |  Smith   |  50 |
|    Eve    | Jackson  |  94 |
|    John   |   Doe    |  80 |
+-----------+----------+-----+

To print the data as an HTML output use the below code snippet


mytable.py
from prettytable import PrettyTable
    
tabular_fields = ["Firstname", "Lastname", "Age"]
tabular_table = PrettyTable()
tabular_table.field_names = tabular_fields 
tabular_table.add_row(["Jill","Smith", 50])
tabular_table.add_row(["Eve","Jackson", 94])
tabular_table.add_row(["John", "Doe", 80])

>>> print(tabular_table.get_html_string())

<table>
    <tr>
        <th>Firstname</th>
        <th>Lastname</th>
        <th>Age</th>
    </tr>
    <tr>
        <td>Jill</td>
        <td>Smith</td>
        <td>50</td>
    </tr>
    <tr>
        <td>Eve</td>
        <td>Jackson</td>
        <td>94</td>
    </tr>
    <tr>
        <td>John</td>
        <td>Doe</td>
        <td>80</td>
    </tr>
</table>
Now as we already know how to create html output for a specific table using prettytable, we will use the same html output within our email body.


  • Here is the code.

import smtplib
from email.mime.multipart import MIMEMultipart
from email.mime.text import MIMEText
def trigger_email():
    my_message = tabular_table.get_html_string()
    text = "Hi!\nHow are you?\nHere is the link you wanted:\nhttp://www.python.org"

    html = """\
    <html>
        <head>
        <style>
            table, th, td {
                border: 1px solid black;
                border-collapse: collapse;
            }
            th, td {
                padding: 5px;
                text-align: left;    
            }    
        </style>
        </head>
    <body>
    <p>Customer Inventory!<br>
       Here are the details?<br>
       Link to register. <a href="http://www.python.org">link</a> you wanted.<br>
       %s
    </p>
    </body>
    </html>
    """ % (my_message)

    part1 = MIMEText(text, 'plain')
    part2 = MIMEText(html, 'html')
    sendFrom = 'Purchase Update <admin@cyberkeeda.com>'
    sendTo = 'customer@cyberkeeda.com'
    # Create the root message and fill in the from, to, and subject headers
    msg = MIMEMultipart('alternative')
    msg['Subject'] = 'Purchase details Status'
    msg['From'] = strFrom
    msg['To'] = strTo
    msg.attach(part1)
    msg.attach(part2)
    
    smtp = smtplib.SMTP('smtp.cyberkeeda.com')
    smtp.sendmail(strFrom, strTo, msg.as_string())
    smtp.quit()
So modify the above with your requirement.



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Python : Selenium and Chromedriver to take webpage screenshot and send it via email.




Browser Automation using Python


Within this post, we will cover.

  • Use of selenium and chromedriver to take screenshot of most recent webpage status.
  • Will leverage the basic preinstalled libraries to send email.
  • Will know, how we can send an image as a part of email body not as an attachment.
  • Will use the headless mode option of chromdriver, that's is the entire operation will run in background no GUI chrome events will be observed.

We will start with the use case:

  • if you have a requirement to check the current status of a webpage multiple times within a day/hour.
  • If you have multiple of webpages to look into periodically without opening any of it, check status of directly from your inbox only.
We will use a python script here and perform the below operations sequentially.
  1. Take screenshot of webpage using Python selenium library and google chrome webdriver and save it in our folder by name screenshot.png
  2. Use Python base library email and use it's multipart function to draft image as an email body.
  3. Use Python base library to send email using SMTP server.
Steps:
  • Download mandatory requirements.
    • Install selenium library from PIP
C:\Users\cyberkeeda> pip install selenium
First confirm which chrome browser you have on your system, for this open Chrome Browser --> Click on 3 dots at the top right corner of chrome --> Help
--> About Chrome Chrome --> You will get google chrome version.
  • Create an new directory and place your above chrome webdriver into it.
  • Note your organizations SMTP server URL/IP.
  • Create a new Python file and paste the below script lines within it.
  • Paste and save your python script and replace the below lines with yours.
    • driverPath  : Replace it with the path you have kept your downloaded chromedriver 
    • chrome_options.add_argument('window-size=1920,1080')  : Replace it with resolution what you want for the screenshot.
      • 720p = 1280 x 720 - is usually known as HD or "HD Ready" resolution
      • 1080p = 1920 x 1080 - is usually known as FHD or "Full HD" resolution
      • 1440p = 2560 x 1440 - is commonly known as QHD or Quad HD resolution
    • driver.get('https://www.mohfw.gov.in/'): Replace it your URL.
    • sendFrom : Replace it your sender's email address.
    • sentTo: Replace it your recipient email address. ( You can use same email for sendFrom and sendTo)
    • smtp = smtplib.SMTP('smtp.cyberkeeda.com') : Replace it your own smtp server or IP.


import smtplib
from email.mime.text import MIMEText
from email.mime.image import MIMEImage
from email.mime.multipart import MIMEMultipart
from selenium.webdriver.chrome.options import Options
from selenium import webdriver
from time import sleep

def grab_screenshot():

    # Path for your downloaded chromedriver.
    driverPath = '\\Users\\cyberkeeda\\BrowserAutomation\\chromedriver'

    # To activate GUI Mode Uncomment te below two lines
    # And comment the below four lines staring from chrome_options to driver

    #driver = webdriver.Chrome(executable_path=driverPath)
    #driver = webdriver.Chrome(driverPath)
    
    chrome_options = Options()
    chrome_options.add_argument("headless")
    chrome_options.add_argument("--start-maximized")
    chrome_options.add_argument('window-size=1920,1080')
    driver = webdriver.Chrome(options=chrome_options, executable_path=driverPath)

    driver.get('https://www.mohfw.gov.in/')
    sleep(15)
    driver.get_screenshot_as_file("screenshot.png")
    driver.close()
    driver.quit()

def emailScreenShot():

    grab_screenshot()

    html_string = """ 
                    '<b>Covid-19 Cases </b> <br> 
                    Do and Don't Link :https://www.mohfw.gov.in/pdf/socialdistancingEnglish.pdf <br>
                    <img src="cid:image1"><br>Regards <br> Automation
                  """

    sendFrom = 'Covid Update <dontreply-covid@cyberkeeda.com>'
    sendTo = 'admin@cyberkeeda.com'
    # Create the root message and fill in the from, to, and subject headers
    msgRoot = MIMEMultipart('related')
    msgRoot['Subject'] = 'Covid-19 Cases Status'
    msgRoot['From'] = strFrom
    msgRoot['To'] = strTo

    # Encapsulate the plain and HTML versions of the message body in an
    # 'alternative' part, so message agents can decide which they want to display.
    msgAlternative = MIMEMultipart('alternative')
    msgRoot.attach(msgAlternative)

    msgText = MIMEText('This is the alternative plain text message.')
    msgAlternative.attach(msgText)

    # We reference the image in the IMG SRC attribute by the ID we give it below
    msgText = MIMEText(html_string, 'html')
    msgAlternative.attach(msgText)

    # This example assumes the image is in the current directory
    fp = open('screenshot.png''rb')
    msgImage = MIMEImage(fp.read())
    fp.close()

    # Define the image's ID as referenced above
    msgImage.add_header('Content-ID''<image1>')
    msgRoot.attach(msgImage)

    # Send the email (this example assumes SMTP authentication is required)
    try:
        smtp = smtplib.SMTP('smtp.cyberkeeda.com')
        smtp.sendmail(sendFrom, sendTo, msgRoot.as_string())
        smtp.quit()
    except:
        print("SMTP Error")

emailScreenShot()



Hope this blog post helps you to meet your requirement, in case of any support using above script do comment.
 

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Python : How to extract desired cell values from a table created by module PrettyTable


PrettyTable

It is simple Python library designed to make it quick and easy to represent tabular data in visually appealing ASCII tables. It was inspired by the ASCII tables used in the PostgreSQL shell psql. PrettyTable allows for selection of which columns are to be printed, independent alignment of columns (left or right justified or centred) and printing of “sub-tables” by specifying a row range.

Official Document : Link

There could be many uses cases while using it, here in this blog post we will cover how we can extract our desired cell values from preetyTable.

So we will start by 
  • Importing module
  • Creating object
  • Add Feilds
  • Add Data
from prettytable import PrettyTable           # importing module

tabular_table = PrettyTable()                 # creating object
tabular_fields = ["Name""Age""Gender"]    # Define Field List

tabular_table.field_names = tabular_fields    # Add Fields to table

tabular_table.add_row(["Tokyo""33""M"])   # Add Data
tabular_table.add_row(["Narobi""74""M"])
tabular_table.add_row(["Denver""21""F"])

print(tabular_table)

Output.
+--------+-----+--------+
|  Name  | Age | Gender |
+--------+-----+--------+
| Tokyo  |  33 |   M    |
| Narobi |  74 |   M    |
| Denver |  21 |   F    |
+--------+-----+--------+


Use Case 1.

  • Extract cell values for a specific field only from prettyTable
Below For loop will help to do so.


for row in tabular_table:
     print (row.get_string(fields=["Name"]))


Output.
+-------+
|  Name |
+-------+
| Tokyo |
+-------+
+--------+
|  Name  |
+--------+
| Narobi |
+--------+
+--------+
|  Name  |
+--------+
| Denver |
+--------+


Use Case 2.

  • Extract cell values without header or border from prettyTable

for row in tabular_table:
     row.border = False
     row.header = False
     print (row.get_string(fields=["Name"]).strip())

Output.
Tokyo
Narobi
Denver
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