And here, I'm going to suggest we've seen numbers, we've seen strings, and I'm going to add Booleans here as well.
我要提醒下大家我们学习过数字数据了,学习过字符串了,今天还要学习布尔类型,这是当我们谈到条件的时候。
We could just collect a bunch of data. For a material .What's the volume it occupies at some pressure and temperature?
对一种物质我们可以得到一系列测量数据,在给定的温度和气压下,它的体积是什么?
Cause when you can actually manipulate a computer's memory at this low level, you can steal people's passwords, you can steal their data if you know how that memory is laid out.
因为即使是在这么低的权限下,你也能熟练控制电脑的存储器,你就可以窃取别人的秘密,如果知道相应数据位于哪里的话,你也能窃取别人的数据。
So, in fact, yes, we did confirm that these covalent bond, at least in the case of hydrogen, we have confirmed by the numbers that we are at a lower energy state when we talk about the bonded atom versus the individual atom.
因此,事实上,是的,我们证实了共价键,至少在氢这种情况下,我们通过数据证实了,成键的原子处于能量更低的状态,当其与单个的原子相对比时。
If you look at Milwaukee, the employment figures don't look that much different than Los Angeles.
如果你看下密尔沃基就业数据看起来,与洛杉矶没有太大差别
So I'm going to suggest that we've looked at three different kinds of things.
那么我提醒下大家我们学了三种类型的,东西了,我们学习过数据类型。
And there is no belief you could possibly hold given these numbers in this game that could ever rationalize shooting the ball to the middle.
在给出的这些数据下,无论你认为门将有多大概率会扑向右路,从中路射门绝对不是一个合理的选择
Well, a cross-sectional study would mean that you'd get a random group of the population and measure them in 1970 and then take another random group five years later and measure them, but it wouldn't be the same people necessarily, it would be different groups of people.
那么,横断面研究就是,1970年你在人群中随意选择一组人,并记录下相关数据,然后,五年后再随意选择一组人记录数据,但这不需要是同一组人,通常是不同的人
We want to have that definition clear because in fact we're going to, we might want tabulate heats of reaction, right, and of course want to know what the conditions are for the tabulated values apply. And we're going to want to calculate them from other quantities and again, we're going to need to know each case what are the relevant conditions?
我们想要明确这个定义,因为实际上我们会想把,反应热制成表格,当然我们会,想知道表中的数据在什么样的,条件下是有效的,我们会,想要从其他的量中算出它们,再一次,我们需要知道,每种情形下相关的条件是什么?
Well basically what we're doing is we're giving ourselves the ability to create data types the same way that we have some built-ins, so we have things like int, float, string, these are built-in data types.
就是要赋值我们自己创建,和内置的数据类型,相同的数据类型的能力,我们有一些内置的数据类型,如int,float,string等,如果你考虑下这些数据类型。
In order to create any kinds of expressions, we're going to need values. Primitive data elements.
因此下一节课,Python的一些简单介绍,我们需要值或者基础的数据类型l来创建。
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