print("x is a positive number") # Incorrect indentation 解决方法:确保所有代码块的缩进一致,通常是4个空格或1个制表符。 x = 10 if x > 0: print("x is a positive number") 2. 忘记使用逻辑运算符: 在条件判断中,忘记使用逻辑运算符可能会导致意外的结果。例如: x = 5 if x > 0 x < 10: ...
在嵌套 if 语句中,可以把 if...elif...else 结构放在另外一个 if...elif...else 结构中。 #!/usr/bin/env python3#判断数字能否整除2和3number = int(input("请输入数字:")) temp1= number%2temp2= number%3iftemp1 ==0:iftemp2 ==0:print("你输入的数字可以被2和3整除")eliftemp2 !=0:pr...
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. Syntax...
if_else的语句结构的前半部分与简单if语句一致,说明了在何种条件为真时要执行的语句,不同的是多了else,else的位置与if的起始位置平齐,在else后紧跟一个冒号(:),从else下一行开始,明确了当if后的逻辑表达式的值为假的时候需要执行的语句,这里同样要注意缩进。 if_else的语句结构使用频率较高,代表的是如果……...
else: print "D" 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 3) if语句的嵌套 编写条件语句时,应该尽量避免使用嵌套语句。嵌套语句不便于阅读,而且可能会忽略一些可能性。 例子: x = -1 y = 99 if(x >= 0): if(x > 0): #嵌套的if语句 ...
IndentationError: unindent doesnotmatchany outer indentation level IndentationError很明顯的出現縮排錯誤,所以還是要注意縮排唷 簡單的會做了,那我們就來稍稍提升一下難度,來試做一個猜年紀的小遊戲 #!/usr/bin/env python3# -*- coding:utf-8 -*-age_of_ironman =35guess_age =input("guess age:")if...
Here’s an example of how to useif,elif, andelsein Python: num=int(input("Enter a number: "))ifnum>0:print("The number is positive.")elifnum==0:print("The number is zero.")else:print("The number is negative.") Copy 3. How do I avoid indentation errors in Python if statements...
If statement, without indentation (will raise an error): a =33 b =200 ifb > a: print("b is greater than a")# you will get an error Try it Yourself » ❮ Python Glossary Track your progress - it's free! Log inSign Up
else: print "x is false so I do nothing" note: type hint to x as bool y is something i don't know what you are going to choose for this i can't make it out from the screenshot EDIT: indentation is the four red dots you get when you press "tab" and the they define your lo...
... else:... print('More')...More There can be zero or more elif parts, and the else part is optional. The keyword ‘elif’ is short for ‘else if’, and is useful to avoid excessive indentation. An if … elif … elif … sequence is a substitute for the switch or case sta...