‘壹’ python 做一个循环 要求输入大于0的数字 判断其不为负数或者字母
defgetInt(prompt,limit=(0,None)):
whileTrue:
try:
x=int(input(prompt))
iflimit[0]isnotNoneandx<limit[0]:
continue
iflimit[1]isnotNoneandlimit[1]<x:
continue
returnx
except:
pass
defsetlimits():
lb=getInt('PleaseenteraLowbound:',(1,None))
hb=getInt('PleaseenteraHighbound:',(lb,9999))
return(lb,hb)
lb,hb=setlimits()
num=getInt('Pleaseenteranumberbetween%dand%d'%(lb,hb),
limit=(lb,hb))
‘贰’ python 做一个循环 要求输入大于0的数字 判断其不为负数或者字母
def getInt(prompt, limit=(0, None)):
while True:
try:
x = int(input(prompt))
if limit[0] is not None and x < limit[0]:
continue
if limit[1] is not None and limit[1] < x:
continue
return x
except:
pass
def setlimits():
lb = getInt('Please enter a Low bound: ', (1, None))
hb = getInt('Please enter a High bound: ', (lb, 9999))
return (lb, hb)
lb, hb = setlimits()
num = getInt('Please enter a number between %d and %d' % (lb, hb),
limit=(lb, hb))
‘叁’ python中x % n>0是什么意思
x%n >0这坦颤帆个语句洞尘一般是用在条件分支中:
例如:
循环列表x变量让雹x是0~10的数字。
如果(if)变量(x)除于(%)2所余的数 大于(>) 0:#执行以下内容:
print(x) #打印变量x
得到的结果是:0~10 中的奇数 1,3,5,7,9.