比较变量类型 [英] Comparing variable types

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本文介绍了比较变量类型的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

type(i)=="< type''flora''>"

这总是返回false。为什么?

type(i)返回< type''flora''>如果我是一个浮点数,为什么不= =工作?

解决方案

> type(i)=="< type' 'float''>"

这总是返回false。为什么?
类型(i)返回< type''flora''>如果我是浮点数,那为什么不= =工作?




使用isinstance(),就像这样:

isinstance(i ,浮动)

如果我是浮动,这将返回True,否则返回False。


- Kef



" Kill Bill" <双** @ kill.com>在消息中写道

news:bn ************* @ ID-198839.news.uni-berlin.de ...

type(i)=="< type''float''>"


这比较当前的i类型(" string"),< type

''str''>。


您可以这样做:

i = 1.3
type(i) =="< type''float''>"


False str(type(i))=="< type''flora''>"
True


这总是返回false。为什么?
类型(i)返回< type''flora''>如果我是浮动的,为什么不= =工作?



您可能想要的是:

导入类型
类型(i )== types.FloatType
True




Emile van Sebille
em *** @ fenx.com


blockquote>

你能告诉我你在哪里在docs中发现了这个方法?我遇到了麻烦

浏览它们,java文档更容易查看。


" KefX" <柯********** @ aol.comNOSPAM>在消息中写道

news:20 *************************** @ mb-m07.aol.com。 ..

type(i)=="< type''float''>"
这总是返回false。为什么?
类型(i)返回< type''flora''>如果我是一个浮点数,那为什么不= =工作?



使用isinstance(),就像这样:
isinstance(i,float)
这个如果我是浮点数将返回True,否则返回False。

- Kef



type(i) == "<type ''float''>"
this always returns false. How come?
type(i)returns <type ''float''> if i is a float so why isn''t == working?

解决方案

>type(i) == "<type ''float''>"

this always returns false. How come?
type(i)returns <type ''float''> if i is a float so why isn''t == working?



Use isinstance(), like this:
isinstance(i, float)
This will return True if i is a float, False if not.

- Kef



"Kill Bill" <bi**@kill.com> wrote in message
news:bn*************@ID-198839.news.uni-berlin.de...

type(i) == "<type ''float''>"
This compares the current type of i to type("string"), which is <type
''str''>.

You can do:

i = 1.3
type(i) == "<type ''float''>"
False str(type(i)) == "<type ''float''>" True

this always returns false. How come?
type(i)returns <type ''float''> if i is a float so why isn''t == working?


What you probably want is:
import types
type(i) == types.FloatType True



Emile van Sebille
em***@fenx.com



Can you tell me where you found that method in the docs? I''m having trouble
navigating them, the java docs are so much easier to look at.

"KefX" <ke**********@aol.comNOSPAM> wrote in message
news:20***************************@mb-m07.aol.com...

type(i) == "<type ''float''>"
this always returns false. How come?
type(i)returns <type ''float''> if i is a float so why isn''t == working?



Use isinstance(), like this:
isinstance(i, float)
This will return True if i is a float, False if not.

- Kef



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