JavaEar 专注于收集分享传播有价值的技术资料

Python : ZeroDivisionError: float division by zero

I have got these code, But it gives a zero division error. I am not able to figure out what is wrong. I need your help. Thank you. :) from math import sqrt def inisialisasi(): filename = raw_input('File will be read? ') return filename def readdatafile(filename): datafil . . .阅读更多

语法错误,意外的tIDENTIFIER,期望输入结束

Trying to start an https server with the following code: # encoding: UTF-8 require 'webrick' require 'webrick/https' include WEBrick root = File.expand_path './public' cert = OpenSSL::X509::Certificate.new File.read 'cert.crt’ pkey = OpenSSL::PKey::RSA.new File.read 'pkey.pem’ serv . . .阅读更多

错误:找不到模块'fabric-client'

After normal run the ./startFabric.sh(it shows as follow ): 2017-07-21 07:47:37.477 UTC [chaincodeCmd] chaincodeInvokeOrQuery -> INFO 00a Chaincode invoke successful. result: status:200 2017-07-21 07:47:37.477 UTC [main] main -> INFO 00b Exiting..... Total execution time : 364 secs .. . . .阅读更多

Dart: HTTP headers are not mutable

I am constantly getting the error "HTTP headers are not mutable" in Dart. What I am trying to do is when a user asks for something in the "packages" folder, it will fetch it. My code with the error is as such: if(new RegExp("/packages/(.*)").hasMatch(request.uri.toString())){ new F . . .阅读更多

Exception ignored in:

I am trying to download freyface data set and show a few example of it. This is my code: import numpy as np import matplotlib.pyplot as plt # configure matplotlib plt.rcParams['figure.figsize'] = (13.5, 13.5) # set default size of plots plt.rcParams['image.interpolation'] = 'nearest' . . .阅读更多

webpack Module not found: Error: Can't resolve 'jquery'

When I run the 'webpack' command, I get this error: ERROR in ./js/main.js Module not found: Error: Can't resolve 'jquery' in '...\js' @ ./js/main.js 3:0-16 4:0-23 In package.json I have: "devDependencies": { "handlebars": "^4.0.6", "handlebars-loader": "^1.4.0", "jquery": "^3. . . .阅读更多

Python Xpath: lxml.etree.XPathEvalError: Invalid predicate

I'm trying to learn how to scrape web pages and in the tutorial I'm using the code below is throwing this error: lxml.etree.XPathEvalError: Invalid predicate The website I'm querying is (don't judge me, it was the one used in the training vid :/ ): https://itunes.apple.com/us/app/cand . . .阅读更多