Life is short, I used Python
introduction
Fellow students Hello everyone, long time no see (only twelve days may be seen: embarrassing) ~~~
Talk about one thing, why did not update yesterday.
emmmmmmmmm, of course, because overtime it, approaching the end, the project company is busy, the most recent update frequency will drop, please forgive.
Ado, beginning today to the question, I should have guessed from the title, and small series to start updating a new series "White reptiles learn Python", between everyone uneven level of Python recommended no basis for the first time updated students before contact look under the small series "Little white school Python" series , Python's syntax rules under a general understanding and some basic usage.
Before blowing himself a wave of water, this series of small series made long-term plans to update the series, currently Python reptile related to third-party libraries some more, there will be a lot of basic knowledge about web programming, because oriented groups are primarily white, these elements are introduced one by one needs, it would be a big series. Amount, far exceeding the previous Python basis.
Amount, forget things children, plus an aside, recent public comments a little background number slightly more, many students no time to reply to the question was the message of the red see, here we have a problem, please add a personal micro-channel can be small series : allen_6174 (plus rest assured, this is a personal life micro signal, and the job number of small series is separate).
Well, the way to resort to ad it: this reptile series will follow the public starting number, personal blog sync station the next day, third-party blog platform synchronized from time to time, Moe mud or not to concern me a little bit?
What are reptiles?
Either as a programmer or white, the word of reptiles should not strange, after all, a lot has happened recently, a lot of people because some things have gone, I will not mention specific circumstances, likely to be harmonious. There may want to know the students flip through my previous article, go public "because wrote some reptiles, more than 200 companies caught! " . Recent reports of such network news as well.
Before the formal start of content, to remind readers fear of the law, love life.
The old rules, first look at Baidu Baidu wave of Interpretation:
Web crawler (also known as web spider, web robot, in the middle of FOAF community, more often called web Chaser), is a kind of follow certain rules, automatically grab information on the World Wide Web program or script. Other less frequently used names include ants, automatic indexing, simulation programs or worms.
Say point to earth that we usually use the network to be seen as a big spider web, each site is seen as a one node online face of this, reptile is like a spider, according to some in this online face or the route has been designed to find the target node to acquire the necessary resources.
Why reptile
Usually when we access to the Internet, see some interesting network resources, you can use the copy paste a way to download these resources back, such as watching almost know when some answers very exciting high praise to answer, when a small amount of data we touch of the right mouse button will get, but if this data is very large, sometimes can be as large than you think, and then right-click the copy paste a bit stretched.
The figure is a blogger using the mouse, non-advertising, I will not put up models.
At this point, we need to run hard-working reptiles, and reptiles such "biological", you can call 24 hours a day non-stop work, just to provide the necessary network and power, you can always diligent with their work, let you liberate both hands, again and without the use of artificial CV Dafa.
As can be seen, reptiles ideally suited to help us do two kinds of things:
- Extracting large amounts of data, under certain conditions rule.
- Fully automated, without human intervention too.
Imagine, when the boss asks you to search for certain types of information when writing a hard-working small reptiles, himself a cup of tea beside a pleasant start to pick up the phone to play, from time to time only to see the reptile has not completed the work, this scene it reminds me of the evil capitalists squeezing labor.
summary
This article introduces the basic concepts of the graduates reptiles, reptile so that we have a general understanding, in order to study the subsequent chapters. Appetizer finished, the next section we will begin the yo eat a big meal, you ready?