Histogram for list of elements python

Question

Does anybody know how I can make this

Input

Explanation: <2> is the first input and shows the number of next inputs lines -> if the first input is n all the input lines are n+1

2 
purple 11,yellow 3,pink 1 
gray 8,blue 10,pink 12

and the last 2 lines are my next inputs(the user wants to collect and save their n days of selling Crayons and get Histogram of their sales

into this

Output

I want to print the line number and its list of words with their number’s histogram(the "*"s actually)line by line

1
purple ***********
yellow ***
pink *
2
gray ********
blue **********
pink ************

I don’t have a problem with getting inputs I just don’t know what codes I should write to print this output.

PS: I stored sales in a list

Asked By: melody

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Source

Answer 1

Assuming the input is strictly in this format, you can just use a list comprehension to store all input lines, then enumerate() over those input lines. For each input line, split by the , to get each item, then split each element by a space to get the name and the amount. Once you have the name and the amount, you can just use a print() statement and use string multiplication to repeat the * (asterisk) character amt times. Like this:

times = int(input())
lines = [input() for _ in range(times)]
for i, line in enumerate(lines):
    print(i+1)
    for item in line.split(','):
        name, amt = item.split(' ')
        print(name, '*' * int(amt))

As Corralien mentioned in a comment, you could replace that last line to use an f-string if you’d like, however, it doesn’t change functionality:

print(f"{name:8} {'*' * int(amt)}")

Answered By: Michael M.

Answer 2

You should just use .split() method several times to split the line by , and then to split every element by " ". Then you should print the color (first part of the element) with * * second part of the element. I used f strings, but you can just use + in the print(). Here is the code:

lines = []
for i in range(int(input())):
    lines.append(input())
# making a list "lines" with all lines

for j in range(len(lines)):
    print(j + 1)  # line number
    for element in lines[j].split(","):
        print(f'{element.split(" ")[0]} {"*" * int(element.split(" ")[1])}')  # color and stars

Hope that helped! 🙂

Answered By: FoxFil

Histogram for list of elements python

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