numbers

Random module not working. ValueError: empty range for randrange() (1,1, 0)

由 好久不见. 提交于 2020-01-10 03:47:23
问题 In Python 2.7.1, I import the random module. when I call randint() however, I get the error: ValueError: empty range for randrange() (1,1, 0) This error is caused by an error in the random.py module itself. I don't know how to fix it, not does reinstalling python help. I can't change versions. can someone please give me code for a working module or tell me what to do? 回答1: You called randint like this: randint(1,0) That tells randint to return a value starting as 1 and ending at 0. The range

How to set DocumentFilter with input length and range? e.g. 1-3 or 10-80

由 ∥☆過路亽．° 提交于 2020-01-09 12:12:12
问题 I'm using DocumentFilter to restrict input as integer or decimal. And the code I post here is working well for that. Can anybody help me about how to restrict the input length or range in the given code? Thanks!! class MyIntFilter extends DocumentFilter { public void insertString(FilterBypass fb, int offset, String string, AttributeSet attr) throws BadLocationException { Document doc = fb.getDocument(); StringBuilder sb = new StringBuilder(); sb.append(doc.getText(0, doc.getLength())); sb

How to set DocumentFilter with input length and range? e.g. 1-3 or 10-80

由 我只是一个虾纸丫 提交于 2020-01-09 12:04:28
问题 I'm using DocumentFilter to restrict input as integer or decimal. And the code I post here is working well for that. Can anybody help me about how to restrict the input length or range in the given code? Thanks!! class MyIntFilter extends DocumentFilter { public void insertString(FilterBypass fb, int offset, String string, AttributeSet attr) throws BadLocationException { Document doc = fb.getDocument(); StringBuilder sb = new StringBuilder(); sb.append(doc.getText(0, doc.getLength())); sb

Using Fractions On Websites

由 梦想与她 提交于 2020-01-09 12:02:06
问题 Is it possible to use any fraction symbol on a website, represented as ¼ rather than 1/4 for example? From what I've gathered, these are the only ones I can use: ½ ⅓ ⅔ ¼ ¾ Is this right and why is that? The reason why I ask this is because I've done a Google web search and can't seem to locate any others ... eg. 2/4 回答1: You can test http://www.mathjax.org/ it is a JavasScript library to make a Math Formula if this is what you want. 回答2: The image below displays all unicode-defined fraction

Using Fractions On Websites

由 喜欢而已 提交于 2020-01-09 12:02:05
问题 Is it possible to use any fraction symbol on a website, represented as ¼ rather than 1/4 for example? From what I've gathered, these are the only ones I can use: ½ ⅓ ⅔ ¼ ¾ Is this right and why is that? The reason why I ask this is because I've done a Google web search and can't seem to locate any others ... eg. 2/4 回答1: You can test http://www.mathjax.org/ it is a JavasScript library to make a Math Formula if this is what you want. 回答2: The image below displays all unicode-defined fraction

Generate a random number in a certain range in MATLAB

由 ε祈祈猫儿з 提交于 2020-01-09 02:15:49
问题 How can I generate a random number in MATLAB between 13 and 20? 回答1: If you are looking for Uniformly distributed pseudorandom integers use: randi([13, 20]) 回答2: http://www.mathworks.com/help/techdoc/ref/rand.html n = 13 + (rand(1) * 7); 回答3: r = 13 + 7.*rand(100,1); Where 100,1 is the size of the desidered vector 回答4: ocw.mit.edu is a great resource that has helped me a bunch. randi is the best option, but if your into number fun try using the floor function with rand to get what you want. I

Generate a random number in a certain range in MATLAB

由 情到浓时终转凉″ 提交于 2020-01-09 02:15:13
问题 How can I generate a random number in MATLAB between 13 and 20? 回答1: If you are looking for Uniformly distributed pseudorandom integers use: randi([13, 20]) 回答2: http://www.mathworks.com/help/techdoc/ref/rand.html n = 13 + (rand(1) * 7); 回答3: r = 13 + 7.*rand(100,1); Where 100,1 is the size of the desidered vector 回答4: ocw.mit.edu is a great resource that has helped me a bunch. randi is the best option, but if your into number fun try using the floor function with rand to get what you want. I

how to display a javascript var in html body

由 廉价感情. 提交于 2020-01-08 17:17:39
问题 I am looking for a way to call a javascript number in the body of an html page. This does not have to be long and extravagant just simply work, I just want something like: <html> <head> <script type="text/javscript"> var number = 123; </script> </head> <body> <h1>"the value for number is: " + number</h1> </body> </html> 回答1: Use document.write(). <html> <head> <script type="text/javascript"> var number = 123; </script> </head> <body> <h1> the value for number is: <script type="text/javascript

as3 how to change a number by a class?

由 拜拜、爱过 提交于 2020-01-07 09:20:35
问题 The following code isn't working: package { public class num { public function num() { } public function numto(num1:Number) { num1 = 47; } } } when I use in my main timeline: import num; var n:Number = 17; numto(n); trace(n); // must be 47 instead of 17 It gives me different error messages such as: access of undefined property numto; 回答1: You should try to learn basics of Actionscript language. Read some general books, it will help you to understand what is going on. As to your question

实验中非常有效的代码段

由 若如初见. 提交于 2020-01-07 08:47:53
1. 大幅度提升 Pytorch 的训练速度 device = torch.device("cuda" if torch.cuda.is_available() else "cpu") torch.backends.cudnn.benchmark = True 2. 把原有的记录文件加个后缀变为 .bak 文件，避免直接覆盖 # from co-teaching train codetxtfile = save_dir + "/" + model_str + "_%s.txt"%str(args.optimizer) ## good job！ nowTime=datetime.datetime.now().strftime('%Y-%m-%d-%H:%M:%S') if os.path.exists(txtfile): os.system('mv %s %s' % (txtfile, txtfile+".bak-%s" % nowTime)) # bakeup 备份文件 3. 计算 Accuracy 返回list, 调用函数时，直接提取值，而非提取list # from co-teaching code but MixMatch_pytorch code also has itdef accuracy(logit, target, topk=(1,)): """Computes
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