Python关键不能用作变量名,该错误发生在如下代码中: 1 class='algebra' Python3的关键字有:and, as, assert, break, class, continue, def, del, elif, else, except, False, finally, for, from, global, if, import, in, is, lambda, None, nonlocal, not, or, pass, raise, return, True, try...
答: 你现在就是在命令行窗口下逐行执行Python代码，对初学者理解作用可能会有些帮助。对于第1个截图当中的错误，主要是缩进的问题，if和elif要对齐。那么对于第2个问题，你可以尝试用4个空格代表一次缩进。如果正确缩进的话，那么在代码前面是会有类似省略号的东西。但还是建议你使用一个编辑器进行代码...
coding=utf-8s = input('单位大写')a = eval(s[3:])d = s[0:3]e ,r = 'USD','RMB'if d == e: print('RMB{:.2f}'.format(a * 6.78))elif d == r: print('USD{:.2f}'.format(a / 6.78))else: pass ...
上述代码中缺少了if语句,导致else关键字无法正确使用。解决方法是添加一个if语句,例如: x=10ifx>5:print("x大于5")else:print("x不大于5") 1. 2. 3. 4. 5. 6. 2. else语句缺失冒号(😃 在Python中,冒号是语法的一部分,用于标识代码块的开始。如果else语句缺少冒号,将会导致语法错误。例如: x=10if...
When the interpreter reaches the if statement it checks for the value of the name and when the value of it is true it runs the main function else the main function is not executed. This brings us to the end of this module in Python Tutorial. Here we have learned what function is with...
In Python, there is no provision to write multi-line comments, or a block comment. For multi-line comments, each line should have the # symbol at the start. A triple quoted multi-line string is also treated as a comment if it is not a docstring of the function or the class....
这里类似于python的if...elif... else语句。 哨兵们以缩进了的 | 开头,后接条件判断语句,再接返回值。最后的else在这里使用otherwise表示。 简单的哨兵示例: 哨兵示例 where 在上面的例子中,weight / height ^ 2的反复出现降低了代码的可读性和灵活性。 为了方便起见,我们可以用where开头,存储一些中间变量。
For example, in C, we don’t want a for word in the middle of a string to be highlighted as a keyword. Here’s an example of how to handle this: %YAML 1.2 --- name: C file_extensions: [c, h] scope: source.c contexts: main: - match: \b(if|else|for|while)\b scope: ...
if(c) This test condition is not true because the value of c is 0, so, else part is executed and the statement written in else part is printed. Learn & Test Your Skills Python MCQsJava MCQsC++ MCQsC MCQsJavaScript MCQsCSS MCQsjQuery MCQsPHP MCQsASP.Net MCQs ...
Most of the programming languages provide indentation for better code formatting and don’t enforce to have it. But in Python it is mandatory. This is why indentation is so crucial in Python. For example, if we run the following code, we will get an error of ‘expected indentation’: ...