无法绕过“IndexError:列表索引超出范围” [英] Can't get around "IndexError: list index out of range"
问题描述
大家好,
我很抱歉新手问题,但我一直在搜索所有
下午而且不能找到答案!
我试图让这段代码工作而不会触发
IndexError。
import shutil,os,sys
if sys.argv [1]!= None:
ver = sys.argv [1]
else:
ver ='''2.14''
当然,每当我运行它时,我都会得到列表索引范围。
我来自php世界,我可以做:
if $ _GET [''var'']!= Null {
$ ver = $ _GET [''var''];
} else {
$ ver =''2.14''; < br $>
}
谁能告诉我如何在python中完成这项工作?
谢谢!
Erik
Hi all,
I''m sorry about the newbie question, but I''ve been searching all
afternoon and can''t find the answer!
I''m trying to get this bit of code to work without triggering the
IndexError.
import shutil, os, sys
if sys.argv[1] != None:
ver = sys.argv[1]
else:
ver = ''2.14''
Of course, whenever I run it, I get list index out of range.
I''m coming from the php world where I can do:
if $_GET[''var''] != Null {
$ver = $_GET[''var''];
} else {
$ver = ''2.14'';
}
Can anyone tell me how to make this work in python?
Thanks!
Erik
推荐答案
_GET [''var'']!= Null {
_GET[''var''] != Null {
ver =
_GET [''var''];
} else {
_GET[''var''];
} else {
这篇关于无法绕过“IndexError:列表索引超出范围”的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!