>>>name='Al'>>>age=4000>>>'My name is %s. I am %s years old.'%(name,age)'My name is Al. I am 4000 years old.' Python 3.6 引入了f-strings,除了用大括号代替了%s,表达式直接放在大括号里面,与字符串插值类似。像原始字符串一样,F 字符串在起始引号前有一个f前缀。在
你会经常使用比较运算符来比较一个变量的值和其他值,就像在eggCount <= 42➊和myAge >= 10➋ 的例子中一样。(毕竟,您可以直接输入True,而不是在代码中输入'dog' != 'cat'。)在学习流程控制语句时,您将会看到更多这样的例子。 布尔运算符 三个布尔运算符(and、or和not)用于比较布尔值。像比较运算符一...
log_message("Program started") # 用户交互 name = get_user_input("Enter your name: ") log_message(f"User name: {name}") age = get_user_input("Enter your age: ") log_message(f"User age: {age}") num1 = get_user_input("Enter the first number: ") num2 = get_user_input("En...
-c cmd : program passed in as string (terminates option list) -d : debug output from parser (also PYTHONDEBUG=x) -E : ignore environment variables (such as PYTHONPATH) -h : print this help message and exit [ etc. ] 1. 2. 3. 4. 5. 6. 7. 8. 9. 我们在写shell脚本时,经常会...
使用f-stringname="Alice"age=30greeting=f"My name is {name} and I am {age} years old."...
NameError: name 'raw_input' is not defined 由于python3.x系列不再有 raw_input函数,3.x中 input 和从前的 raw_input 等效,把raw_input换成input即可。 SyntaxError: multiple statements found while compiling a single statement 这是因为整体复制过去运行而产生的错误;解决方案如下: ...
count = 0 while count <= 100: print("Programming is fun!") count = count + 1 Recall that Listing 3.3, SubtractionQuiz.py, gives a program that prompts the user to enter an answer for a question on subtraction. Using a loop, you can now rewrite the program to let the user enter a...
using System;publicclassHappyProgram{publicstaticvoidMain(){ Console.WriteLine("Enter a number: ");intYourNumber=Convert.ToInt16(Console.ReadLine());if(YourNumber >10) Console.WriteLine("Your number is greater than ten");if(YourNumber <=10) Console.WriteLine("Your number is ten or smaller"...
foreach_path_bin.sh - runs each binary of the given name found in $PATH with the args given. Useful to find all the installed versions of a program in different paths eg. ~/bin/ vs /usr/local/bin/ eg. foreach_path_bin.sh terraform --version http_duplicate_urls.sh - find duplicate...
似乎是因为有int(age),所以输入字母就报错了。使用变量active 来控制循环结束的时机。 7-5 重写: prompt = "\nTell us your age:" prompt += "\nEnter 'quit' to end the program.\n\t" active = True while active: age = input(prompt) if age != 'quit': age = int(age) if age < 3...