Printing Lists in a somewhat table form

Question

I have read a few of the Stack answers on similar issues to mine. I have only found one answer that results in the output I want and that was an answer by the user arshajii in the following question:

Print list in table format in python

His answer was:

>>> l1 = ['a', 'b', 'c']
>>> l2 = ['1', '2', '3']
>>> l3 = ['x', 'y', 'z']
>>> for row in zip(l1, l2, l3):
...     print ' '.join(row)

a 1 x
b 2 y
c 3 z

The above is what I would like my format to be. I have tried his method but it doesn't work for my code. I have a feeling it's because the person that asked the question was talking about external files.... Can anyone help me rewrite this code into a non-external source format?

The optimal layout would result in the output being something like:

Letter a, Number 1, Letter x
Letter b, Number 2, Letter y
Letter c, Number 3, Letter z

With the letter and numbers actually being words printed (print "Letter ").

The below is the code I currently have:

    for list in zip ([rounds], [numberOfHits], [score]):
    print("Round " + str(rounds) + ": " + str(numberOfHits) + " shots. " + str(score)) .join(list)

But my output is:

Round [1, 1]: [6, 4] shots. 5 under par.

Rather than:

Round [1]: [6] shots. 3 under par.
Round [2]: [4] shots. 1 under par.

I keep getting the AttributeError: 'NoneType' object has no attribute 'join'. Anyone know why this is coming up?

Thank you in advance! Hopefully this is all understandable but if it isn't let me know.

(Please don't give me any solutions that require external programs. I am using PyCharm and would just like to stick to this type of coding before moving onto more advanced code.)

Answer 1

I'll just predefine these variables with what I expect they would be, since I'm not sure what your code would contain:

import random

def calculate_score(par, hits):
    if par == hits:
        return "par"
    elif hits < par:
        return "{} under par".format(par - hits)
    else:
        return "{} over par".format(hits - par)

# score for each hole
numberOfHits = []
parForHole = []

for hole in range(18):
    # choose a random par
    par = random.randint(3,7)
    # choose a random number of hits that the user does
    user_score = random.randint(par - 2, par + 2)
    parForHole.append(par)
    numberOfHits.append(user_score)

for index, (hits, par) in enumerate(zip(numberOfHits, parForHole), 1):
    print("Round {round_number}: {hits} shots. {under_or_over}".format(
        round_number=index,
        hits=hits,
        under_or_over=calculate_score(par, hits)
    ))

To explain this a bit, enumerate assigns each index in a list a number. So instead of having a rounds list, you can just generate those at the end:

>>> list(enumerate([5,3,6,7], 1))
[(1, 5), (2, 3), (3, 6), (4, 7)]

.format is a nicer to way to create strings in python. You can create "replacement fields" and then assign values to them, like so:

>>> "Here is a {} string: {}".format("cool", "something")
'Here is a cool string: something'

Or you can name them:

>>> "Here is a {adjective} string: {description}".format(adjective="cool", description="something")
'Here is a cool string: something'

Heres what the output looks like:

Round 1: 3 shots. 2 under par
Round 2: 4 shots. par
Round 3: 6 shots. par
Round 4: 4 shots. 1 over par
Round 5: 5 shots. 1 under par
Round 6: 4 shots. par
Round 7: 3 shots. par
Round 8: 2 shots. 2 under par
Round 9: 6 shots. 2 over par
Round 10: 5 shots. par
Round 11: 6 shots. 1 over par
Round 12: 3 shots. par
Round 13: 3 shots. 2 under par
Round 14: 1 shots. 2 under par
Round 15: 6 shots. par
Round 16: 6 shots. 2 over par
Round 17: 2 shots. 1 under par
Round 18: 5 shots. 1 under par

Hopefully that explains everything, let me know if anything doesn't make sense.

Edit: Ah, I think I mistook Round with Hole. My bad, golf isn't my strong suit.

Answer 2

l1 = ["a","b","c"]
l2 = ["1","2","c"]
l3 = ["x","y","z"]
for x in range(0,3):
    print("Letter",l1[x],"Number",l2[x],"Letter",l3[x])

That will print in the format:

Letter a Number 1 Letter x
Letter b Number 2 Letter y
Letter c Number 3 Letter z