覆盖变量 [英] Overwriting Variable

问题描述

大家好

我在Python中有一个循环，负责系统的主要功能.我在循环中有各种字符串变量，可在循环的每次迭代中重复使用这些变量，并不断为其分配新的字符串值.

在为它们分配新的字符串值之前，我不会清除字符串变量.

我应该在分配新的字符串值之前清除每个字符串变量吗?

还是在分配新值时以前的变量值被完全覆盖??

感谢您的所有帮助

问候

Hi Guys

I have a loop in Python that is responsible for the main functionality of my system. I have various string variables in the loop that are re-used on each iteration of the loop and are continuously assigned new string values.

I do not clear string variables before I assign them with new string values.

Should I be clearing each string variable before assigning a new string value??

Or are previous variable values completely overwritten when you assign a new value??

Thanks for all the help

Regards

推荐答案

嗨sach262，

如果您使用
之类的赋值语句 var1 = expression_yielding_a_string 您会做的很好，而像var1 += expression_yielding_a_String
这样的作业
会将字符串内容累积到var1中.

希望这会有所帮助.

干杯

Manfred

Hi sach262,

if you''re using assignment statements in the likes of
var1 = expression_yielding_a_string you''ll be doing fine, whereas assignments like var1 += expression_yielding_a_String

will accumulate string content into var1.

Hope this helps.

Cheers

Manfred

sach262写道:

sach262 wrote:

在分配新的字符串值之前，我不会清除字符串变量.

我应该在分配新的字符串值之前清除每个字符串变量吗?

I do not clear string variables before I assign them with new string values.

Should I be clearing each string variable before assigning a new string value??

编号

No.

sach262写道:

sach262 wrote:

或者在分配新值时以前的变量值会被完全覆盖吗?

Or are previous variable values completely overwritten when you assign a new value??

是的.
:)

Yes.
:)

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