[英]How do I print only the last value in a for loop?
For the below code, I only want to print the last approximation for the squareroot function, instead of printing out every approximation.对于下面的代码,我只想打印平方根函数的最后一个近似值,而不是打印出每个近似值。
def square(x):
guess = int(x/2)
for i in range(1,10):
nextguess = (guess + x/guess)/2
guess=nextguess
print(nextguess)
Just de-denting your print()
will work:只需去除您的
print()
凹痕即可:
def square(x):
guess = int(x/2)
for i in range(1,10):
nextguess = (guess + x/guess)/2
guess=nextguess
print(nextguess)
After the loop, nextguess
still has the value form the last cycle.在循环之后,
nextguess
仍然具有上一个循环的值。 In Python, a loop does not create a new scope.在 Python 中,循环不会创建新的作用域。 So, everything you create or change in the loop is still available after the loop.
因此,您在循环中创建或更改的所有内容在循环后仍然可用。
If you are using a list, for example, List1
is the List name:例如,如果您使用的是列表,则
List1
是列表名称:
List1 = ["praneeth","Veeru","Avinash","Harsha","Avinash"]
. List1 = ["praneeth","Veeru","Avinash","Harsha","Avinash"]
。
If you would like to print Avinash
which is the last element of the list, you can use List1[-1]
which returns the last element of the list.如果您想打印列表的最后一个元素
Avinash
,您可以使用List1[-1]
返回列表的最后一个元素。
You can try doing it with a while loop你可以尝试用一个while循环来做
def square(x):
guess = int(x/2)
i = 1
while (i < 10):
nextguess = (guess + x/guess)/2
guess=nextguess
i = i + 1
print(nextguess)
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