how to stop python while loop

Question

code as below
try to -1 t till t become 0 (!>0) to stop while loop but it doesn't work.

import sys
t = int(input())
while t > 0:
for a in sys.stdin:
list = []
b = a.split()
for c in b:
list.append(int(c))
if list[3] - list[2] == list[1] - list[0]:
list.append(list[3] + (list[3] - list[2]))
print(list[0],list[1],list[2],list[3],list[4])
else:
list.append(list[3] * (int(list[3] / list[2])))
print(list[0],list[1],list[2],list[3],list[4])
t = t - 1

Answer 1

Well, any loop can be stopped forcefully using the "break" keyword. Perhaps you can try that?

Answer 2

1. The break keyword breaks out of the loop.
2. The "list" variable is a reserved keyword in python. You may want to rename it.

Answer 3

unfortunately, big blocks of code like this isnt really the best. just nest for loops with range of input.

for i in range(t):

Answer 4

problem key: What can't stop is "for loop" not "while loop"

solution:
1.add if condition to break for loop.
2.just break for loop is also work.

Answer:
#Eva 的回家作業
import sys
#決定輸入幾次
#t = int(input())
#access console 輸入
t = int(sys.stdin.readline().strip('\n'))
while t > 0:
for a in sys.stdin:
list = []
b = a.split()
for c in b:
list.append(int(c))
if list[3] - list[2] == list[1] - list[0]:
list.append(list[3] + (list[3] - list[2]))
print(list[0],list[1],list[2],list[3],list[4])
else:
list.append(list[3] * (int(list[3] / list[2])))
print(list[0],list[1],list[2],list[3],list[4])
t = t - 1; //optional
if(t==0): //optional
break;
t = t - 1;