Python中的三元表达式可以将if-else语句放到一行里。语法如下:value = true-expr if condition else false-expr true-expr或false-expr可以是任何Python代码。它和下面的代码效果相同:if condition: value = true-expr else: value = false-expr 下面是一个更具体的例子:In [126]: x = 5 In [127]: '...
localtime()),file=sys.stderr)if__name__=='__main__':startTime=strftime(timeformat,localtime())main()endTime=strftime(timeformat,localtime())fh=open('python.log','a')print("%s\n\tRun time : %s - %s "%\(' '.join(sys.argv),startTime,endTime)...
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you lose")ifwidth==0andheight==0and(color=='red'oremphasis isNone):raiseValueError("I don't think so -- values are %s, %s"%(width,height))Blob.__init__(self,width,height,color,emphasis,highlight
if x < 0: print('It's negative') 1. 2.if后面可以跟一个或多个elif,所有条件都是False时,还可以添加一个else:if x < 0: print('It's negative') elif x == 0: print('Equal to zero') elif 0 < x < 5: print('Positive but smaller than 5') else: print('Positive and larger than...
Python x, y = 3, 8 if x = y: print(f"x and y are equal ({x = }, {y = })") Unlike the C example, this Python code gives you an explicit error instead of a bug.The distinction between assignment statements and assignment expressions in Python is useful in order to avoid ...
(是的,这是正确的代码,仔细一看:该else条款属于for循环,不是的if。陈述) 当循环使用,该else条款有更多的共同点与 else一个条款try声明比它认为的 if语句:一个try语句的else时候也不例外条款发生运行和循环的else条款时没有运行break 发生。有关try语句和异常的更多信息,请参阅 处理异常。 该continue声明也是从C...
Python中的三元表达式可以将if-else语句放到一行里。语法如下:value = true-expr if condition else false-expr true-expr或false-expr可以是任何Python代码。它和下面的代码效果相同:if condition: value = true-expr else: value = false-expr 下面是一个更具体的例子:...
a comment aboutthiscode:#1someCode()# Here is a lengthier block comment that spans multiple lines using #2# several single-line commentsina row.# #3# These are knownasblock comments.ifsomeCondition:# Here is a comment about some other code:#4someOtherCode()# Here is an inline comment....
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