[interview questions] a little bit of Python crawler interview questions

SunriseCai 2020-11-13 11:28:38
interview questions little bit python


This article is pure and wild , There is no reference to other people's articles or plagiarism . Insist on originality !!

Preface

This is not the so-called python Reptile interview questions 170 Avenue , Neither python Reptile interview questions 100 Avenue , Here's the question I was asked during the interview , While there are still some impressions , Write it down .


The epidemic is not over , But learning can't stop .
Share the interview questions , Those who need to change jobs can learn ...


Some people may think this interview question is too simple ? Maybe I made it up . It's not , This is really several interview questions , As for why it's so easy ? Um. ... It's because I'm too busy , So the difficulty of the interview is that there is no difficulty for you .

Okay !!! End of bullshit , Here is the main point .


Interview questions ( interview + written examination )

Don't do it here interview And written examination The distinction between , I sort them into small pieces , Namely

  • 1. Python Basics
  • 2. Reptile base
  • 3. other

Because of the lack of personal knowledge reserve , In order to avoid mistakes , Only interview questions are shared here , The answer needs to be answered by yourself


1. Python Basics

  1. Talk about what you know Python Shallow copy And Deep copy Application scenarios of
  2. You know, Python Of GIL Do you ? Talk about your understanding of it ?
  3. You know, Git Do you ? its pull and push What's the difference ?
  4. What is your common database ?( I answered. Mysql)
    4.1 Mysql what are you having? engine
  5. Talk about Python Decorator The role of ?
  6. use Python Code a singleton pattern .
  7. Talk to you about Threads And process coroutines The understanding of the ?
  8. Talk about yield How keywords work .
  9. Talk about Python generator iterator Iteratable object Application scenarios of .
  10. From the following string . Use regular expressions to extract all links inside .
<ul>
<a href="https://blog.csdn.net/weixin_45081575/article/details/102886718" target="_blank"></a>
<a href="https://blog.csdn.net/weixin_45081575/article/details/97295118" target="_blank"></a>
<a href="https://blog.csdn.net/weixin_45081575/article/details/104603779" target="_blank"></a>
<a href="https://blog.csdn.net/weixin_45081575/article/details/102528739" target="_blank"></a>
</ul>

2. The reptile part

  1. You think reptiles The core technology What is it? ?
  2. How do you do de duplication ?
  3. Do you know about the bloon filter ?
  4. Tell me how you design a crawler ? What modules does it have and why do you design it like this ?
  5. How many status codes are there in the process of network request ? How do you deal with ?
  6. You used pyspider and scrapy Frame ? Talk about their workflow ? What are their characteristics ?
  7. Have you ever grabbed a mobile app , stay App What tools have been used in the grab process , What to do separately ?
  8. Grabbing App When I met with some difficult problems ?
  9. The result of the crawler request is as follows , What do you think is going to go wrong ? What would you do ?

    é¦–å…ˆå¼€å§‹æ¥ç»˜åˆ¶ä½ çš„ç¬¬ä¸€ä¸ªå›¾è


3. other

  • What do you think are the key factors affecting the crawling efficiency ?
  • You used redis Do you ? You think a 1GB Space. redis How many lengths can I put 32 position Of url? Please write down the thinking process .
    • redis What are the data types ? various ⾃ Climbing ⾍ What's in it ⽤ It's about ?
  • You know the message lines ? What did you use ? Where to use these Middleware in crawlers ?
  • You know, Python zen Do you ? How is your code style ? Say what you know about the various code naming conventions .

The latter

Okay , This sharing is over .
If you have any questions, please leave a message below .

版权声明
本文为[SunriseCai]所创,转载请带上原文链接,感谢

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