Pythagorean's Challenge( not passing test cases although giving correct results for custom input)

try:
a=0
b=0
A=9
t=[]
#r=[]
m=int(input())
for _ in range(m):
n= int(input())
t.append(n)
#t= input()
#size =
for i in range (0,m):
if t[i]<=1000 and t[i]>=0:
for a in range(t[i]+1,0,-1):
for b in range(0,a+1):
if (a2 + b2) == t[i]:
print("({},{})".format(b,a), end=" ")
print()

print("\t")

print(sep="\t")

print(end="\n")

except EOFError:
pass