list_a = list_a = [ axiaxiaomagi , baoyao , cantilever , sharp11 list_b = [ Achilles Permian, Bacheng, Jun, L , L , and sharp12 def main (): -sharplist_a[i] -sharplist_b[i] -sharpi+=1 ...
recently I learned about the tornado framework, so I heard a saying that not all python libraries support asynchronism. OK, so think of it. It may be said that if a child thread or a child process is running this code at the same time, either there will ...
as shown in the figure, the following problems occurred during the installation of es. I set the folders to 777 permissions and gave es user permissions. Why do I still report insufficient permissions during execution? Look up on the Internet, it is all ...
recently, I encountered a little problem when I was learning web development. About the abstract algorithm, I still don t understand it after checking the data. It is as follows: Baidu encyclopedia has this article: generally speaking, as long as t...
member_id openID mp_id openID openID ** mp_id openID ** sql SELECT * FROM `score_log` WHERE `mp_id` = gh_1d3037ae656c AND `openid` = o5NHFsy-PUHxY7G_h_S8UscpKVg8 ...
after combining vue project with django project, hint: Not Found: graphql [30 Jan 2019 05:37:44] "GET graphql HTTP 1.1 " 404 2064 but after searching, I found that there is no such graphql at all. I don t know if it comes with it or in which ...
problem description visual studio code + selenium + python, using WebDriverWait to report errors the environmental background of the problems and what methods you have tried chromedriver.exe has been downloaded from the official website. The versi...
problem description In multiprocessing, multiple processes are started to write multiple files, but after running, there is * .gz on the hard disk, but the content is empty. the environmental background of the problems and what methods you have trie...
scene: Raspberry pie 3B+ camera is official: , , , , : mmal: mmal_vc_port_enable: failed to enable port vc.null_sink:in:0(OPQV): ENOSPC mmal: mmal_port_enable: failed to enable connected port (vc.null_sink:in:0(OPQV))0x16b90b0 (ENOSPC) mmal: mma...
df = pd.DataFrame({ key1 : [ a , a , a , b , b ], key2 : [ c , d , c , c , d ], data : [1,10,2,3,30]}) >>> df key1 key2 data 0 a c 1 1 a d 10 2 a c 2 3 b c 3 4 ...
import sympy x=sympy.symbols( x ) r=sympy.factor(x**7-1) print(sympy.factor(x**7-1)) (x - 1)*(x**6 + x**5 + x**4 + x**3 + x**2 + x + 1) how can I get the second expression (x words 6 + x words 5 + x words 4 + x words 3 + x words 2 + x + 1) before I...
how to get the value of csrf_token on the backend using flask-wtforms ...
I will report an error when I use decode ...
problem description runs under the conda command, but debug reports an error under pycharm from django.core.management import execute_from_command_line ModuleNotFoundError: No module named django the platform version of the problem and what meth...
< H2 > the problem is this: < H2 > pipenv is good to use, but often installing some packages can t solve the dependency problem. For example, I recently used a dogpile.cache, using pipenv install dogpile.cache==0.7.1 to install and report an error....
import sympy x=sympy.symbols( x ) s= x**6 + x**5 + x**4 + x**3 + x**2 + x + 1 .replace(" ","") r=sympy.solve(s,x) print(r) for i in r: print(i) the result is -cos (pi 7)-I sin (pi 7),-cos (pi 7) + I sin (pi 7), cos (2 pi 7...
problem description I used SQLAlchemy to build a SQLite database to store literature data. Now I want to check the number of authors of each article. The author and the document are stored in two separate tables, using the identification number of the...
now there are tasks that need to use a deep learning framework to implement a function that is roughly the same as that of LogisticRegression in scikit-learn. Is it possible? If there is one? Could you tell me the general steps? Because I am not familiar...
files have been downloaded, the original files are all about 1m, but scrapy downloads are all 3k. As shown in the following picture. ...
< H1 > attach the source code of the crawler file. < H1 > import scrapy from openhub.items import OpenhubItem from lxml import etree import json class ProjectSpider(scrapy.Spider): name = project -sharp allowed_domains = [] start_urls ...
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problem description the existing first layer rendering id name description, of a plate shows that different productVersions,table prop and scope cannot obtain the data in productVersions I have tried many methods with little talent and learning, but...
problem description to do is a row of two form items, separated with el-row, el-col, found that click on the label text in front of the form item, the form item will also get the focus, tried a variety of methods, did not figure out what the reason is...
tmp saves the csv information, as shown in the following figure and then sorts it by the size of F1: score = tmp [ f1 ] .order () score.head () len (score) then divide the whole data 5 equally: df = {} close = tmp [ close ] port1 = list...
for example, how do I check the amount of storage space occupied by db6? ...