UNIX ASSIGNMENT - IX Question 4 : Show the most commonly used commands from "history". [hint: remember the history command, use cut, and sort it]

What is the best way to tell which objects are directories in the output of ls when there is a lengthy listing of items?

a. Read the data in the file weatherAUS.csv into a Python dictionaryb. Show the first 5 lines to show that the data has been read in I've got the below but can't show the first 5 lines. Help? import csv # import csv with open('weatherAUS.csv') as dataFile: # opens the csv    dictreader = csv.DictReader(dataFile) # dictreader    for row in dictreader:            print(row) # prints all rows

Filename: runlength_decoder.py Starter code for data: hw4data.py Download hw4data.py  Download hw4data.pyYou must provide a function named decode() that takes a list of RLE-encoded values as its single parameter, and returns a list containing the decoded values with the “runs” expanded. If we were to use Python annotations, the function signature would look similar to this:def decode(data : list) -> list: Run-length encoding (RLE) is a simple, “lossless” compression scheme in which “runs” of data. The same value in consecutive data elements are stored as a single occurrence of the data value, and a count of occurrences for the run. For example, using Python lists, the initial list:     [‘P’,‘P’,‘P’,‘P’,‘P’,‘Y’,‘Y’,‘Y’,‘P’,‘G’,‘G’] would be encoded as:     ['P', 5, 'Y', 3, ‘P’, 1, ‘G’, 2] So, instead of using 11 “units” of space (if we consider the space for a character/int 1 unit), we only use 8 “units”.  In this small example, we don’t achieve much of a savings (and indeed the…

In python don't import libraries

python:  In the Python terminal, the command dir(list) returns a list of operations that can be performed on lists. choose three (3) operations from this list and, in your own words, describe what it does, how to use it, and give your own example. Try to choose operations that have not been completed yet.