blocks|key|620266|text|您可以尝试使用以下命令：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|620267|word[1:]|code-block|syntax|javascript|620268|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

You can instead try using:

<pre><code>word[1:]
</code></pre>

blocks|key|404593|text|是的，当然，你应该：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|404594|word[1:]|code-block|syntax|javascript|404595|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Yes, of course, you should:

<pre><code>word[1:]
</code></pre>

blocks|key|620355|text|你在找这个吗？|type|unstyled|depth|inlineStyleRanges|entityRanges|data|620356|>>>+word+=+"Help"
>>>+word[1:]
'elp'|code-block|syntax|javascript|620357|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Are you looking for this?

<pre><code>&gt;&gt;&gt; word = "Help"
&gt;&gt;&gt; word[1:]
'elp'
</code></pre>

blocks|key|404646|text|或者甚至是：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|404647|>>>+word+=+"Help"
>>>+word[-3:]
'elp'|code-block|syntax|javascript|404648|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Or even:

<pre><code>&gt;&gt;&gt; word = "Help"
&gt;&gt;&gt; word[-3:]
'elp'
</code></pre>

blocks|key|620439|text|我发现自己需要将结束索引指定为函数中的输入变量。在这种情况下，您可以使用end=None。例如：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|620440|def+slice(val,start=1,stop=None)
++++return+val[start:stop]

word+=+"Help"
slice(word)++#+output:+'elp'|code-block|syntax|javascript|620441|entityMap^0|10|8|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|P|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|L|$]]

I found myself needing to specify the end index as an input variable in a function. In that case, you can make <code>end=None</code>. For example:

<pre><code>def slice(val,start=1,stop=None)
 return val[start:stop]

word = "Help"
slice(word) # output: 'elp'
</code></pre>

blocks|key|620504|text|如果你只想省略字符串的第一个字符，你可以像这样做：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|620505|word[1:]|code-block|syntax|javascript|620506|在这里，您指定要将索引1中的字符，即字符串的第二个字符，一直到最后一个索引。这意味着您只在字符串的第一个索引处对字符进行切片，在本例中为'H‘。打印这将导致：'elp‘|620507|我不确定这是不是你要找的东西。|620508|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|P|8|@]|9|@]|A|$]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

You could always just do it like this if you want to only omit the first character of your string:

<pre><code>word[1:]
</code></pre>

Here you are specifying that you want the characters from index 1, which is the second character of your string, till the last index at the end. This means you only slice the character at the first index of the string, in this case 'H'.
Printing this would result in: 'elp'

Not sure if that's what you were after though.

blocks|key|404867|text|有时保存索引很有用，例如在其他变量上使用它或将它传递给函数。在这里，slice对象非常有用。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|404868|>>>+word+=+"Help"
>>>+index+=+slice(1,None)+#+equivalent+to+[1:]+indexing
>>>+word[index]
'elp'
>>>+sentence+=+"Help+with+Python+indexing."
>>>+sentence[index]
'elp+with+Python+indexing.'|code-block|syntax|javascript|404869|entityMap^0|Y|5|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|P|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|L|$]]

Sometimes it is useful to save the index, for example to use it on other variables or to pass it to functions. Here, <code>slice</code> objects come in useful.
<pre><code>&gt;&gt;&gt; word = &quot;Help&quot;
&gt;&gt;&gt; index = slice(1,None) # equivalent to [1:] indexing
&gt;&gt;&gt; word[index]
'elp'
&gt;&gt;&gt; sentence = &quot;Help with Python indexing.&quot;
&gt;&gt;&gt; sentence[index]
'elp with Python indexing.'
</code></pre>

With string indices, is there a way to slice to end of string without using len()?
Negative indices start from the end, but [-1] omits the final character.

<pre><code>word = "Help"
word[1:-1] # But I want to grab up to end of string!
word[1:len(word)] # Works but is there anything better?
</code></pre>

Python string slice indices - slice to end of string

Python

对于字符串索引，有没有一种不使用len()就能切到字符串末尾的方法？负索引从末尾开始，但-1省略最后一个字符。word = "Help"word[1:-1] # But I want to grab up to end of string!word[1:len(word)] # Works but is there a...

问Python字符串切片索引-切片到字符串末尾
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