This is a small project where you pull together many Python features to solve a realistic data problem. Download tiptop.zip to get started. The file "tiptop.py" is included as a starting point, but it is basically blank, so you are creating and testing your functions from scratch. This project does not require map/lambda.
Suppose there's this new social network called TipTop. Each poster has a handle like '@alice'. TipTop posts have tags like '#watsup' and '#meh'.
A "posts" text file records the statistics about a series of posts in following format: each line in the file represents one post by a poster. The first word on the line is the poster, e.g. '@alice', followed by 0 or more tags, like this:
@alice^#meh^#wut @rose^#woot^#bleh^#NOPE @dude @ALICE^#hope ...
The line is divided into parts by '^'. The poster and tags will not contain '^', but may contain any other chars. Your code should identify the poster and tags by their position on the line, not by assuming that the first char is '@' or '#'.
We'll say a "tags" dict has a key for each tag, and its value is a nested list of the posters that posted with that tag. The list of posters should not have duplicates in it; a poster should be in the list at most once. The poster and tag names should be converted to lowercase form.
{
...
'#meh': ['@juliette', '@alice', '@arun'],
'#texas': ['@miguel', '@rose'],
...
}
The tiptop.py program takes a posts file as its one command line argument, reads it into the tags dict, and prints a report of all the tags. Print the tags in alphabetical order, one per line. For each tag, print its posters in alphabetical order, indented by 1 space, like this:
$ python3 tiptop.py small.txt #bikelife @bfranklin @celine @tkirk #bleh @at @celine ... #whatevs @bob @sal
The starter file tiptop.py has the minimal structure of a Python program, but you need to design and type in the functions yourself. You should have a function that reads the posts text file into a tags dict. You should have another function that prints out the tags dict. The main() function should knit the two functions together. See wordcount.zip for an example of this pattern.
The functions other than main() should have 1-sentence """Pydoc""". Doctests are not required, but may be the easiest way to be confident that your code works correctly. Your program should be able to process these input files: test1.txt test2.txt small.txt big.txt
$ python3 tiptop.py test1.txt #aaa @alice @bob #bbb @alice @bob $ python3 tiptop.py big.txt #bestlife @alice @at @bfranklin ... #zippy @bfranklin @bitso @eric27 @jack @vputin
Once your code is cleaned up and works right, creating order out of chaos, please turn in your tiptop.py and ghost.py files on Paperless as usual.