Python數字-整數運算
資料來源: https://github.com/stormzhang/free-programming-books/blob/master/assets/python/Python%E6%A0%B8%E5%BF%83%E7%BC%96%E7%A8%8B%EF%BC%88%E4%B8%AD%E6%96%87%E7%AC%AC%E4%BA%8C%E7%89%88%EF%BC%89%E5%B8%A6%E7%9B%AE%E5%BD%95.pdf 的p127~p127
# -*- coding: UTF-8 -*-
#整數運算
print(1/2) # 0
print(1.0/2.0) # 0.5
print(1//2.0) # floors result, returns integer # 地板除, 返回整數 0
print(-1//2) # move left on number line# 返回比 –0.5 小的整數, 也就是 -1
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