Web Development Data Processing: Merging and Displaying Lists in Python

[WalidKhan]

In a web development project, I'm dealing with two lists of data that need to be merged and displayed on a webpage. One list contains user comments, and the other list contains system-generated messages. I need to merge these two lists while preserving the order of messages and displaying them on the webpage.

Here's a simplified example of the data:

user_comments = [
    {'user': 'Alice', 'message': 'Hello!'},
    {'user': 'Bob', 'message': 'Hi there!'},
]

system_messages = [
    {'message': 'System message 1'},
    {'message': 'System message 2'},
]

I want to merge these two lists to create a single list that combines user comments and system messages in the correct order for display on the webpage. What considerations should I make when combining and presenting these lists on a webpage as part of a web development project, and how can I accomplish this in Python? I attempted to locate the answer by visiting different sites, but I was unable. Could you give an example of code and describe how to format the combined data? Thank you for your guidance!

Edited November 16, 2023 by Phi for All
commercial link removed by moderator

[Sensei]

Without the time parameter, we don't know when someone said something and when the system sent any message, so you can only insert element at the end of the list.

Here is the working Python code:

#!/bin/python

user_comments = [
	{ 'user': 'Alice', 'message': 'Hello!' },
	{ 'user': 'Bob', 'message': 'Hi there!' },
]

system_messages = [
	{ 'message': 'System message 1' },
	{ 'message': 'System message 2' },
]

for msg in system_messages:
	user_comments.append( { 'user': 'system', 'message': msg[ 'message' ] } )

line=1
for msg in user_comments:
	if( msg is not dict ):
		#print( "Converting.." )
		msg = dict( msg )
	print( str( line ), "User", msg[ 'user' ], "Message", msg[ 'message' ] )
	line += 1

print( "OK" )

I added a special user system for convenience.

 

On 9/21/2023 at 10:36 AM, WalidKhan said:

In a web development project, I'm dealing with two lists of data that need to be merged and displayed on a webpage.

In real web development, it should use a database such as MySQL.

https://www.w3schools.com/python/python_mysql_getstarted.asp

 

On 9/21/2023 at 10:36 AM, WalidKhan said:

One list contains user comments, and the other list contains system-generated messages.

This is a list of dict objects that are not understood as a dict until the dict() function is used (at least by my Python v3.x)

https://docs.python.org/3/tutorial/datastructures.html#dictionaries

 

This also seems to work:

#!/bin/python

user_comments = [
	{ 'user': 'Alice', 'message': 'Hello!' },
	{ 'user': 'Bob', 'message': 'Hi there!' },
]

system_messages = [
	{ 'message': 'System message 1' },
	{ 'message': 'System message 2' },
]

for msg in system_messages:
	user_comments.append( msg )

line=1
for msg in user_comments:
	print( str( line ), end=' ' )
	for key in msg:
		print( key, msg[ key ], end=' ' )
	print()
	line += 1

print( "OK" )

(but msg won't have the "user" key of course, you would have to verify it before using it)

Edited September 27, 2023 by Sensei