[Tutor] Removing duplicates

[Roger Lea Scherer]

I'm trying to get a list of tuples to be a float, a numerator, and a
denominator for all the fractions: halves, thirds, fourths etc up to
ninths. 1/2 returns the same float as 2/4, 3/6, 4/8. I would like to keep
only the 1/2. When I try (line 18) to "pop"  from the list I get a "TypeError:
integer argument expected, got float". When I try (line 18)  to "remove"
from the list, nothing happens: nothing is removed and I do not receive an
error message.

What do you think is a good way to solve this?

Thank you as always.

import math

fractions = [(0, 0, 0)]

for i in range(1, 10):
    for j in range(1, 10):
        if i < j:
            x = i/j
            if x not in fractions:
                fractions.append((x, i, j))
    sortedFrac =  sorted(fractions)

print(sortedFrac)

for i in range(len(sortedFrac)):
    try:
        if sortedFrac[i][0] == sortedFrac[i-1][0]: # so if the float equals
the previous float
            sortedFrac.pop(sortedFrac[i][0])           # remove the second
float
        else:
            sortedFrac.append(sortedFrac[i][0])
    except ValueError:
        continue


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Roger Lea Scherer
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