如何用字符串“Null”替换所有None值在字典中 [英] How to replace all None values with the string "Null" in a dictionary

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问题描述

大家好,


如何在

字典中用字符串''Null'替换所有None值?


例如:

将此转换为:

a = {''item1'':45,''item2'':无}


到此:

a = {''item1'':45,''item2'':''Null''}


谢谢


Daniel

Hi all,

How can I replace all None values with the string ''Null'' in a
dictionary?

For example:
convert this:
a = {''item1'': 45, ''item2'': None}

into this:
a = {''item1'': 45, ''item2'': ''Null''}

Thanks

Daniel

推荐答案



丹尼尔>如何在

Daniel>中用字符串''Null'替换所有None值。字典?


a = {''item1'':45,''item2'':无}

用于键入:

如果[key]为None:

a [key] =" Null"


Skip

Daniel> How can I replace all None values with the string ''Null'' in a
Daniel> dictionary?

a = {''item1'': 45, ''item2'': None}
for key in a:
if a[key] is None:
a[key] = "Null"

Skip


dcrespo写道:
dcrespo wrote:
大家好,

如何在
字典中用字符串''Null'替换所有None值?

例如:
将此转换为:
a = {''item1'':45,''item2'':无}

进入这个:
a = {''item1'':45,''item2'':''Null''}
Hi all,

How can I replace all None values with the string ''Null'' in a
dictionary?

For example:
convert this:
a = {''item1'': 45, ''item2'': None}

into this:
a = {''item1'': 45, ''item2'': ''Null''}



for k in a:

如果[k]为无:

a [k] =''Null''


你不是这样做的SQL语句,是吗?如果是这样的话,

参数化查询就可以了...


问候

Steve

-

Steve Holden +44 150 684 7255 +1 800 494 3119

Holden Web LLC www.holdenweb.com

PyCon TX 2006 www.python.org/pycon/


for k in a:
if a[k] is None:
a[k] = ''Null''

You aren''t doing this to create SQL statements, are you? If so,
parameterized queries are the way to go ...

regards
Steve
--
Steve Holden +44 150 684 7255 +1 800 494 3119
Holden Web LLC www.holdenweb.com
PyCon TX 2006 www.python.org/pycon/


" dcrespo" <直流***** @ gmail.com>写道:
"dcrespo" <dc*****@gmail.com> writes:
大家好,

如何用
字典中的字符串''Null'替换所有None值?
Hi all,

How can I replace all None values with the string ''Null'' in a
dictionary?




迭代字典中的所有内容:


for key,mydict.items()中的项目:

如果项目为无:

mydict [key] =''Null''


< mike


-

Mike Meyer< mw*@mired.org> http://www.mired.org/home/mwm/

独立的WWW / Perforce / FreeBSD / Unix顾问,电子邮件以获取更多信息。



Iterate over everything in the dictionary:

for key, item in mydict.items():
if item is None:
mydict[key] = ''Null''

<mike

--
Mike Meyer <mw*@mired.org> http://www.mired.org/home/mwm/
Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information.


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