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Learning Python Comments and Math in your Apps!

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[开发(python) 所属分类 开发(python) | 发布者 店小二05 | 时间 2017 | 作者 红领巾 ] 0人收藏点击收藏

In this post we will examine two great features we can begin using in our amazing python applications. The first is the ability to use the pound sign (#) in order to add comments to our code.

This of course makes our code more “self documenting”. This is a fancy term for us being able to figure out what the hell the code is supposed to do if we wrote it a long time ago and forgot! It is also nice to have this done in the event we ship our code off to a peer that needs to understand what we are up to.

# This is an entire line of code that is not going to run in this application - it is just here for our documentation purposes.
# Anything after the # is ignored by Python!
print "Here is the print command at work that we used in an earlier lesson."
print "And here is another cool way to use it!" # This will not print even though it is in the same line of code!

Let me save this masterpiece as ex2.ps and run it! Today I am using the Python download for windows because I cannot find my MacBook!

C:\Users\terry> python C:\Users\terry\OneDrive\Blog\Python\ex2.ps
Here is the print command at work that we used in an earlier lesson.
And here is another cool way to use it!
C:\Users\terry>

Now let’s turn our attention to math here are the math operators we have at our disposal!

+ plus

- minus

/ slash

* asterisk

% percent

< less-than

> greater-than

<= less-than-equal

>= greater-than-equal

Now it is time for me to create ex3.ps and have some fun with math!

print "This is how much I like to tip when the service in the US at a restaurant is poor and the tab is $100 - ", 100 * %15
print "If the service is good - ", 100 * %18
print "If the service is awesome - ", 100 * %20
print "My age is shown below!"
print 40 + 7

Now it is time to run it!

C:\Users\terry>python C:\Users\terry\OneDrive\Blog\Python\ex3.ps
This is how much I like to tip when the service in the US at a restaurant is poor and the tab is $100 - 15.0
If the service is good - 18.0
If the service is awesome - 20.0
My age is shown below!
47

C:\Users\terry>

I hope you will return for some more Python fun soon!

本文开发(python)相关术语:python基础教程 python多线程 web开发工程师 软件开发工程师 软件开发流程

主题: PythonMacBookWindows
tags: our,print,Python,gt,code,terry,Users
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