Python Basics
Python Basics

Heatmap cannot cluster due to too many NA reasons and solutions

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Python Basics

Tips in R

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Python Basics

Shell program timing

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Python Basics

Remove mapping bias

In the research of alleles, one of the important steps is to remove the alignment bias. As we all know, human beings are diploid organisms, there will be a pair of alleles at the same position on the chromosome, which is generally homozygous (homozygous); sometimes one of the alleles is mutated (it can be understood as a SNP, oligonucleotide polymorphism) ), will become heterozygous (heterozygous) state.image.pngIf a person is heterozygous at a certain locus, such as AG (A is consistent with the

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Advanced Python
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Python | Python learning multi-process detailed explanation

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Miss Douyin belongs to your four poses

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Crawler | A hundred lines of code crawling 14.5W Douban book information

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Data Science | These time series show operations

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Data Science | Time is silly and unclear

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Pragmatism | How to happily learn from the boss?

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Python Web Development
Python Web Development

Use python to help you get up quickly!

In the python network model, in order to achieve high concurrency, there are many solutions: multi-threading, multi-process. Regardless of multi-threading or multi-process, IO scheduling depends more on the system, and the way of coroutine, scheduling comes from the userUse coroutines to achieve efficient concurrent tasks. And this operation is called asynchronous IO (asyncio)Simply put: when we initiate an IO operation without waiting for the end of the instruction set, we can continue to do ot

... Colton
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Python Web Development

A taste of Python quick sort

wikiWhat is quick sort?The definition of Wikipedia is: quick sort, also known as partition exchange sort , abbreviated as fast sort , a sorting algorithm . Under average conditions, sort n itemsComparisons. In the worst caseComparisons, but this situation is not common. In fact, quicksort is usually significantly faster than other algorithms because its inner loop can be achieved very efficiently on most architectures.stepQuick sort stepsQuicksort uses a divide-and-conquer strategy to divide a l

... Carter
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Python Web Development

Use Python to add a progress bar to the program

For development or operation and maintenance, it is very normal to use python to complete some batch tasks or do some monitoring events. So how to effectively monitor the progress of the task, besides adding log to the task, can there be another way to understand the progress of the task?This is what we are going to understand today, the progress barStandard output Let me first talk about what control characters are available in the operating system:\r: Move the cursor to the first position of t

... Alejandro
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Machine Learning
Machine Learning

Getting started with day99-redis & adding, deleting and modifying shopping cart & shopping cart data structure

1. Start redisEnter the redis decompression directory Run redis-server.exe redis.windows.conf from the command line2. Python link redis, enter the ConnectionPool to view and configure according to the specific configuration required# redis connection pool POOL = redis.ConnectionPool(host='127.0.0.1', port=6379, decode_responses=True) REDIS_CONN = redis.Redis(connection_pool=POOL)3. Basic usage of redis3.1 .set() and .get()3.2 .hset() and .hget()3.3 .hmset() and .hgetall()3.4 .scan_iter()3.5 .exi

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Machine Learning

day96-day98-media configuration & token aging & models field auto_XX

1. It involves the media settings of image upload, which is generally only configured once in the project1.1 The class table in models has a field for image upload1.2 Configuration in settings# mediaConfiguration MEDIA_URL = "media/" MEDIA_ROOT = os.path.join(BASE_DIR, "media")1.3 Configuration in the project urls.pyfrom django.conf.urls import url, include from django.contrib import admin # Copy from LuffyProject import settings from django.views.static import serve urlpatterns = [ url(r'^admin

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Machine Learning

day96-Cross-domain request & ContenType handles multi-table foreign key relationships

1. Resolve cross-domain requests1.1 Cross-domain only exists in the test environment, create a new middleware, the code is as followsfrom django.utils.deprecation import MiddlewareMixin class MyCors(MiddlewareMixin): @staticmethod def process_response(request, response): response["Access-Control-Allow-Origin"] = "*" if request.method == "OPTIONS": # Information header response["Access-Control-Allow-Headers"] = "Content-Type, AUTHENTICATE" # Request method response["Access-Control-Allow-Methods"]

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Machine Learning

day95-paging component

1. Paging according to the page number and the number of data on each page, the actual configuration canfrom rest_framework import pagination # Paging according to the page number and how many data on each page class MyPagination(pagination.PageNumberPagination): """ http://127.0.0.1:8000/api/page?page=2&size=3 Display from the second page, each page displays 3 data """ # One page shows two pieces of data page_size = 2 # url Splicing query keywords, page=n, starting from page n page_query_pa

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Machine Learning

day94-Authentication component & permission component & access rating limit

1. Certified components1.1 Define authentication and create a new auth.py file1.1.1 Inherit BaseAuthentication1.1.2 The hook function name is determined1.1.3 Return value returns two parameters, request.user and request.auth, namely user_obj and token1.1.4 There are many ways to obtain tokens, see stickerfrom rest_framework import authentication from django.core.cache import cache from rest_framework.request import Request from rest_framework.exceptions import AuthenticationFailed from app_auth

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Machine Learning

day93-view package & routing component & version control

1. The first package and the second package of the view1. The first package and the second package (the second package is just to integrate inherited classes)1.1 First of all, clearly encapsulate, because the difference between different additions, deletions, and changes lies in the different tables and different serializers. Tables and serialization classes can be written in a class method1.2 A single query is different from multiple queries, write separately1.3 So the strategy is: - First writ

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Machine Learning

Use of day91-day92-DjangoRestFrameWork serialization & deserialization

1. Install DjangoRestFrameWorkpip install...2. Register APP in settings3. Add at the bottom of the settings, depending on whether you need to add the actual error, you can BaiduREST_FRAMEWORK = { "DEFAULT_AUTHENTICATION_CLASSES": [] }4. Use of DjangoRestFrameWork1. Create a new serializers.py file under the APP2. The first edition (initial edition)2.1 The code of models.py is as follows (comparative reference)from django.db import models class Book(models.Model): title = models.CharField(max_len

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