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Basically, I'm converting a float to an int, but I don't always have the expected value. Here's the code I'm executing: x = 2.51 print("--------- 251.0") y = 251.0 print(y) print(int(y)) print("--------- 2.51 * 100") y = x * 100 print(y) print(int(y)) print("--------- 2.51 * 1000 / 10") y = x * 1000 / 10 print(y) print(int(y)) print("--------- 2.51 * 100 * 10 / 10") y = x * 100 * 10 / 10 print(y) print(int(y)) x = 4.02 print("--------- 402.0") y = 402.0 print(y) print(int(y)) print("--------- 4.02 * 100") y = x * 100 print(y) print(int(y)) print("--------- 4.02 * 1000 / 10") y = x * 1000 / 10 print(y) print(int(y)) print("--------- 4.02 * 100 * 10 / 10") y = x * 100 * 10 / 10 print(y) print(int(y)) And here's the result (first value is the result of the operation, second value is int() of the same operation): --------- 251.0 251.0 251 --------- 2.51 * 100 251.0 250 --------- 2.51 * 1000 / 10 251.0 251 --------- 2.51 * 100 * 10 / 10 251.0 250 --------- 402.0 402.0 402 --------- 4.02 * 100 402.0 401 --------- 4.02 * 1000 / 10 402.0 401 --------- 4.02 * 100 * 10 / 10 402.0 401 2.51 and 4.02 are the only values that lead to that strange behaviour on the 2.50 -> 5.00 range. Every other two digits value in that range converts to int without any problem when given the same operations. So, what am I missing that leads to those results? I'm using Python 2.7.2 by the way.

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