不同的结果22/7在python 2.7.12和3.6 [重复](different result 22/7 on python 2.7.12 and 3.6 [duplicate])
这个问题在这里已经有了答案:
- Python 2.7中的分区。 和3.3 [重复] 4个答案
如何在python 2.7上输出
22//7
成为3.14159
?我尝试使用float(22/7)
但它只给我3.0
。 我尝试使用Decimal
但它只是给我3
,使用round(x, 6)
只给3.0
,就像float
一样。This question already has an answer here:
how to make output
22//7
on python 2.7 become3.14159
?i try usefloat(22/7)
but it just give me3.0
. I try useDecimal
but it just give me3
, useround(x, 6)
only give3.0
just likefloat
.
原文:https://stackoverflow.com/questions/47301667
最满意答案
您永远不会在任何地方初始化CLLocationManager对象。 将以下代码放入View Did Appear中
obLocatinManager = CLLocationManager()
使用模拟器时,您可以通过此菜单调用位置更改。 我需要首先做一些改变,我想尝试在模拟器中捕获位置更改委托。
You never init the CLLocationManager object anywhere. Put the following code in the View Did Appear
obLocatinManager = CLLocationManager()
When you use simulator you can invoke location change by this menu. I gotta need to make some change first I think to try to catch the location change delegate in the simulators.
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