Question

有一段代码可以将用户输入的任何内容更改为小写，我将如何将其实现到我的代码中而不是使用[＆＃34; a＆＃34;或＆＃34; A＆＃34;]？

def displaymenu():
    print("Weather station")
    print("Please enter the option you would like")
    optionchoice = input("Please enter A,B,C or D:")

    if optionchoice in ["a" or "A"]:
        print("The temperature will be displayed")
        time.sleep(1)
        optionA()

    elif optionchoice in ["b" or "B"]:
        print("The wind speed will be displayed")
        time.sleep(1)
        optionB()

    elif optionchoice in ["c" or "C"]:
        print("The day and time will be displayed")
        time.sleep(1)
        optionC()

    elif optionchoice in ["d" or "D"]:
        print("The Location will be displayed")
        time.sleep(1)
        optionD()

    else:
        print("Please type a valid input")
        displaymenu()

Answer 1

尝试这样的事情：

.glyphicon-menu-left:before { content: "\e257"; }

通过这种方式，您可以将输入强制为用户输入的小写版本。

Answer 2

实际上Python有一个内置方法：

例如：

string = "ABCDabcd123"
lowercase = string.lower()
print(lowercase)

会给你abcdabcd123！

尝试一下，在这里找到更多相关信息： https://www.tutorialspoint.com/python/string_lower.htm

Answer 3

如果您使用python 2，则应使用raw_input().lower()。

Answer 4

使用str.lower()方法，您可以更改代码，如下所示：

NodeList childNodes = nodeGettingChanged.getChildNodes();
                for (int i = 0; i != childNodes.getLength(); ++i) {
                    Node child = childNodes.item(i);
                    if (!(child instanceof Element))
                        continue;

                    if (child.getNodeName().equals("runAs")) {
                            if(child.getFirstChild().getTextContent()=="false"){

                                session.remove(flowFile1);
                                File deleteExtraFile =new  File("C://Users//s.tkhilaishvili//Desktop//try2//nifi-1.3.0//1//conf.xml");
                                boolean delete=deleteExtraFile.delete();



                            }
                            else {
                                child.getFirstChild().setNodeValue("false");
                            }

                    }

                }

如果由于某种原因你想坚持你的版本，请像这样验证输入：

                public void process(InputStream inputStream, OutputStream outputStream) throws IOException {
                    TransformerFactory transformerFactory = TransformerFactory.newInstance();
                    Transformer transformer = null;
                    try {
                        transformer = transformerFactory.newTransformer();
                    } catch (TransformerConfigurationException e) {
                        e.printStackTrace();
                    }
                    DOMSource source = new DOMSource(finalXmlDocument);
                    ffStream.close();
                    ByteArrayOutputStream bos = new ByteArrayOutputStream();
                    StreamResult result = new StreamResult(bos);


                    try {
                        transformer.transform(source, result);
                    } catch (TransformerException e) {
                        e.printStackTrace();
                    }
                    byte[] array = bos.toByteArray();
                    outputStream.write(array);
                }

            });

             session.remove(flowFile);
            session.transfer(flowFile1, REL_SUCCESS);




            }

将用户输入更改为小写的代码

4 个答案: