Bug de adição estranho do Python [duplicado]
Duplicata Possível:
python - problemas de casas decimais com carros alegóricos
Python flutuar a estranheza da igualdade
No código abaixo eu tenho a variávelpercentage
que é um flutuador. Eu tenho configurado para que o senumber
alcança10,000
, percentage
é suposto subir por.01
.
# Tries to find a number that when squared and 5%'ed is still a square.
import math
print("Script has started:\n")
percentage = .1
number = 1
while number != -1:
number = number + 1
num_powered = number ** 2
num_5per = num_powered * percentage
num_5per_sqrt = math.sqrt(num_5per)
num_list = list(str(num_5per_sqrt))
dot_location = num_list.index(".")
not_zero = 0
for x in num_list[dot_location + 1:]:
if x != "0":
not_zero = 1
break
if not_zero == 0:
print("*********************************")
print("Map :",number)
print("Safe-Area :",num_5per_sqrt)
print("Percentage :",percentage)
print("*********************************")
input()
if number > 10000:
number = 0
percentage = percentage + .01
print(percentage)
Saída:
0.11
0.12
0.13
0.14
0.15000000000000002 # Here is where it goes crazy
0.16000000000000003