Buggy python submission (verdict: Runtime Error):
from itertools import combinations
import sys

if N == 1:
    print(1)
    sys.exit()

X_Y = [0] * N

for i in range(N):
    X_Y[i] = tuple(map(int, input().split()))

N = int(input())    

combo = list(combinations(X_Y, 2))
diff = [0] * (len(combo))

for i, item in enumerate(combo):
    x_dif = item[0][0] - item[1][0]
    y_dif = item[0][1] - item[1][1]
    diff[i] = [x_dif, y_dif]

count_list = [0] * len(diff)
for k, d in enumerate(diff):
    p = d[0]
    q = d[1]
    count = 0
    for i in range(0, len(X_Y) - 1):
        if (X_Y[i][0] == X_Y[i + 1][0] + p) and X_Y[i][1] == X_Y[i + 1][1] + q:
            count += 0
        else:
            count += 1
    count_list[k] = count
print(min(count_list) + 1)

Fixed submission:
from itertools import combinations
import sys

N = int(input()) 
X_Y = [0] * N

for i in range(N):
    X_Y[i] = tuple(map(int, input().split()))


if N == 1:
    print(1)
    sys.exit()

combo = list(combinations(X_Y, 2))
diff = [0] * (len(combo))

dict_diff = {}

for i, item in enumerate(combo):
    x_dif = item[0][0] - item[1][0]
    y_dif = item[0][1] - item[1][1]
    diff[i] = [x_dif, y_dif]
    if str(diff[i]) in dict_diff:
        dict_diff[str(diff[i])] += 1
    else:
        dict_diff[str(diff[i])] = 1
    
    x_dif = item[1][0] - item[0][0]
    y_dif = item[1][1] - item[0][1]
    diff[i] = [x_dif, y_dif]
    if str(diff[i]) in dict_diff:
        dict_diff[str(diff[i])] += 1
    else:
        dict_diff[str(diff[i])] = 1

print((N) - max(dict_diff.values()))

Buggy python submission (verdict: Runtime Error):
from itertools import combinations
N = int(input())

X_Y = [0] * N

for i in range(N):
    X_Y[i] = tuple(map(int, input().split()))
    
combo = list(combinations(X_Y, 2))
diff = [0] * (len(combo))

for i, item in enumerate(combo):
    x_dif = item[0][0] - item[1][0]
    y_dif = item[0][1] - item[1][1]
    diff[i] = [x_dif, y_dif]

count_list = [0] * len(diff)
for k, d in enumerate(diff):
    p = d[0]
    q = d[1]
    count = 0
    for i in range(0, len(X_Y) - 1):
        if (X_Y[i][0] == X_Y[i + 1][0] + p) and X_Y[i][1] == X_Y[i + 1][1] + q:
            count += 0
        else:
            count += 1
    count_list[k] = count
print(min(count_list) + 1)

Fixed submission:
from itertools import combinations
import sys

N = int(input()) 
X_Y = [0] * N

for i in range(N):
    X_Y[i] = tuple(map(int, input().split()))


if N == 1:
    print(1)
    sys.exit()

combo = list(combinations(X_Y, 2))
diff = [0] * (len(combo))

dict_diff = {}

for i, item in enumerate(combo):
    x_dif = item[0][0] - item[1][0]
    y_dif = item[0][1] - item[1][1]
    diff[i] = [x_dif, y_dif]
    if str(diff[i]) in dict_diff:
        dict_diff[str(diff[i])] += 1
    else:
        dict_diff[str(diff[i])] = 1
    
    x_dif = item[1][0] - item[0][0]
    y_dif = item[1][1] - item[0][1]
    diff[i] = [x_dif, y_dif]
    if str(diff[i]) in dict_diff:
        dict_diff[str(diff[i])] += 1
    else:
        dict_diff[str(diff[i])] = 1

print((N) - max(dict_diff.values()))

Buggy python submission (verdict: Runtime Error):
N = int(input())

X_Y = [0] * N

for i in range(N):
    X_Y[i] = tuple(map(int, input().split()))
    
combo = list(combinations(X_Y, 2))
diff = [0] * (len(combo))

for i, item in enumerate(combo):
    x_dif = item[0][0] - item[1][0]
    y_dif = item[0][1] - item[1][1]
    diff[i] = [x_dif, y_dif]

count_list = [0] * len(diff)
for k, d in enumerate(diff):
    p = d[0]
    q = d[1]
    count = 0
    for i in range(0, len(X_Y) - 1):
        if (X_Y[i][0] == X_Y[i + 1][0] + p) and X_Y[i][1] == X_Y[i + 1][1] + q:
            count += 0
        else:
            count += 1
    count_list[k] = count
print(min(count_list) + 1)

Fixed submission:
from itertools import combinations
import sys

N = int(input()) 
X_Y = [0] * N

for i in range(N):
    X_Y[i] = tuple(map(int, input().split()))


if N == 1:
    print(1)
    sys.exit()

combo = list(combinations(X_Y, 2))
diff = [0] * (len(combo))

dict_diff = {}

for i, item in enumerate(combo):
    x_dif = item[0][0] - item[1][0]
    y_dif = item[0][1] - item[1][1]
    diff[i] = [x_dif, y_dif]
    if str(diff[i]) in dict_diff:
        dict_diff[str(diff[i])] += 1
    else:
        dict_diff[str(diff[i])] = 1
    
    x_dif = item[1][0] - item[0][0]
    y_dif = item[1][1] - item[0][1]
    diff[i] = [x_dif, y_dif]
    if str(diff[i]) in dict_diff:
        dict_diff[str(diff[i])] += 1
    else:
        dict_diff[str(diff[i])] = 1

print((N) - max(dict_diff.values()))