CODEWITHSUNDEEP
pythonlistmin
Megan
Megan

Reputation: 27

Finding the smallest number in a list from a textfile: Python

In my code, I am trying to get a list of numbers from a text file and find the smallest two of them. How would i do this?

Myfile = open("RoundOneTotalScores.txt","r")

AScore = ()
BScore = ()
CScore = ()
DScore = ()
EScore = ()
FScore = ()

for line in Myfile:
    if "A" in line.split(',')[0]:
        AScore = line.split(',')[1]

for line in Myfile:
    if "B" in line.split(',')[0]:
        BScore = line.split(',')[1]

for line in Myfile:
    if "C" in line.split(',')[0]:
        CScore = line.split(',')[1]

for line in Myfile:
    if "D" in line.split(',')[0]:
        DScore = line.split(',')[1]

for line in Myfile:
    if "E" in line.split(',')[0]:
        EScore = line.split(',')[1]

for line in Myfile:
    if "F" in line.split(',')[0]:
        FScore = line.split(',')[1]


list1 = [AScore, BScore, CScore, DScore, EScore, FScore]

int(list1)
smallest = min(list1)
print(smallest)

Myfile.close()

The error that keeps coming up is: Traceback (most recent call last): File "", line 1, in EliminateR1() File "D:\NEA Real\Test3.py", line 39, in EliminateR1 int(list1) TypeError: int() argument must be a string, a bytes-like object or a number, not 'list'

Upvotes: 0

Views: 1019

Answers (1)

Eric Duminil
Eric Duminil

Reputation: 54263

Here's an example, assuming your data looks something like this. If you want the minimum, you can use min. If you want the two smallest values, you can sort the list and pick the 2 first ones:

txt = """A,1
B,3
F,5
D,4
C,2"""

values = [int(line.split(',')[1]) for line in txt.splitlines()]
print(values)
# [1, 3, 5, 4, 2]
print(min(values))
# 1
print(sorted(values))
# [1, 2, 3, 4, 5]
print(sorted(values)[:2])
# [1, 2]

If you read from a file, you can use :

with open("RoundOneTotalScores.txt") as f:
    lines = f.readlines()
values = [int(line.split(',')[1]) for line in lines]
print(values)
# [1, 3, 5, 4, 2]
print(min(values))
# 1
print(sorted(values))
# [1, 2, 3, 4, 5]
print(sorted(values)[:2])
# [1, 2]
print(sorted(values)[2:])
# [3, 4, 5]

Note that collections such as list, dict and sets are defined so that you don't need to define AScore, BScore, ...

Upvotes: 1

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