In Python, you can use a concise syntax for simpleif/elsestatements. This is known as the Ternary Operator. It’s a one-liner conditional expression that evaluates to a value based on a condition. Example: num=int(input("Enter a number: "))result="Even"ifnum%2==0else"Odd"print(resul...
In [5]: if name = "susmote": #如果不用“==”比较值,则会报语法错误 ...: print("名字是susmote") ...: File "<ipython-input-5-06510f3ebd56>", line 1 if name = "susmote": ^ SyntaxError: invalid syntax 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 其他的关...
Here, we haven't used indentation after theifstatement. In this case, Python thinks ourifstatement is empty, which results in an error. Python if...else Statement Anifstatement can have an optionalelseclause. Theelsestatement executes if the condition in theifstatement evaluates toFalse. Synta...
File "<stdin>", line 1 [num **2 for num in range(10) if num % 2 == 0 else 0] ^ SyntaxError: invalid syntax 官方文档并没有提及到这个。我就说一下我的理解方法。 1,python解释器看到列表生成式会先找关键字 for,for 后面的部分是为了筛选需要显示的数字,for 前面的表达式则是对这些数字进行...
Python if elseis commonly used withoperators, like the comparison or logical operators to create the conditional statements. Syntax if (condition): #Statement to be executed elif (condition): # Optional #Statement to be executed else: # Optional #Statement to be executed ...
SyntaxError: invalid syntax 其他的关系运算符如下 大于等于 >= 小于等于 <= elif在其他语言中叫 “ else if ”,python简化了这个表达式,elif一般是用来判断多个表达式的,也就是说在一个判断语句中可以有多elif,这个也有点类似于其他语言的switch case,当然也要加上else ...
[num **2 for num in range(10) if num % 2 == 0 else 0] ^ SyntaxError: invalid syntax 官方文档并没有提及到这个。我就说一下我的理解方法。 1,python解释器看到列表生成式会先找关键字 for,for 后面的部分是为了筛选需要显示的数字,for 前面的表达式则是对这些数字进行进一步加工。
In Python, the if..else statement has two blocks: one for when the condition is True and another for when the condition is False. Syntax: if expression : statement_1 statement_2 ... else : statement_3 statement_4 ... If the expression is True, the statements after if are executed...
python 是哪个版本，是不是编码的问题。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 ...
如果命中的可能性比较大，那就用 try...except...，反之用 if...else...，原因是尽量减少索引检查...