blocks|key|793578|text|根据字符串的结构，您可以使用lstrip|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|793579|str+=+str.lstrip(':')|code-block|syntax|javascript|793580|但这会删除开头的所有冒号，也就是说，如果你有::foo，结果将是foo。但是，如果您也有不是以冒号开头的字符串，并且不想删除第一个字符，则此函数非常有用。|793581|entityMap|0|LINK|mutability|MUTABLE|url|http://docs.python.org/library/stdtypes.html#str.lstrip^0|E|6|E|6|0|0|0|M|5|W|3|0^^$0|@$1|2|3|4|5|6|7|U|8|@$9|V|A|W|B|C]]|D|@$9|X|A|Y|1|Z]]|E|$]]|$1|F|3|G|5|H|7|10|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|11|8|@$9|12|A|13|B|C]|$9|14|A|15|B|C]]|D|@]|E|$]]|$1|M|3|-4|5|6|7|16|8|@]|D|@]|E|$]]]|N|$O|$5|P|Q|R|E|$S|T]]]]

Depending on the structure of the string, you can use <a href="http://docs.python.org/library/stdtypes.html#str.lstrip"><code>lstrip</code></a>:

<pre><code>str = str.lstrip(':')
</code></pre>

But this would remove all colons at the beginning, i.e. if you have <code>::foo</code>, the result would be <code>foo</code>. But this function is helpful if you also have strings that do not start with a colon and you don't want to remove the first character then.

blocks|key|793642|text|删除字符：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|793643|def+del_char(string,+indexes):

++++'deletes+all+the+indexes+from+the+string+and+returns+the+new+one'

++++return+''.join((char+for+idx,+char+in+enumerate(string)+if+idx+not+in+indexes))|code-block|syntax|javascript|793644|它会删除索引中的所有字符；您可以在del_char(your_string,+[0])中使用它|offset|length|style|CODE|793645|entityMap^0|0|0|H|Q|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@$I|R|J|S|K|L]]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

deleting a char:

<pre><code>def del_char(string, indexes):

 'deletes all the indexes from the string and returns the new one'

 return ''.join((char for idx, char in enumerate(string) if idx not in indexes))
</code></pre>

it deletes all the chars that are in indexes; you can use it in your case with <code>del_char(your_string, [0])</code>

blocks|key|1007955|text|你的问题似乎不清楚。你说你想删除“某个位置的一个字符”，然后继续说你想删除一个特定的字符。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1007956|如果你只需要删除第一个字符，你可以这样做：|1007957|s+=+":dfa:sif:e"
fixed+=+s[1:]|code-block|syntax|javascript|1007958|如果要删除特定位置的字符，可以执行以下操作：|1007959|s+=+":dfa:sif:e"
fixed+=+s[0:pos]%2Bs[pos%2B1:]|1007960|如果你需要删除一个特定的字符，比如':'，当它第一次出现在字符串中时，你可以这样做：|1007961|s+=+":dfa:sif:e"
fixed+=+''.join(s.split(':',+1))|1007962|entityMap^0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|T|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|V|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|W|8|@]|9|@]|A|$G|H]]|$1|M|3|N|5|6|7|X|8|@]|9|@]|A|$]]|$1|O|3|P|5|F|7|Y|8|@]|9|@]|A|$G|H]]|$1|Q|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]]|R|$]]

Your problem seems unclear. You say you want to remove "a character from a certain position" then go on to say you want to remove a particular character.

If you only need to remove the first character you would do:

<pre><code>s = ":dfa:sif:e"
fixed = s[1:]
</code></pre>

If you want to remove a character at a particular position, you would do:

<pre><code>s = ":dfa:sif:e"
fixed = s[0:pos]+s[pos+1:]
</code></pre>

If you need to remove a particular character, say ':', the first time it is encountered in a string then you would do:

<pre><code>s = ":dfa:sif:e"
fixed = ''.join(s.split(':', 1))
</code></pre>

blocks|key|1007982|text|只需执行以下操作：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1007983|r+=+"hello"
r+=+r[1:]
print(r)+#+ello|code-block|syntax|javascript|1007984|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|$]]

Just do this:
<pre><code>r = &quot;hello&quot;
r = r[1:]
print(r) # ello
</code></pre>

I would like to remove the first character of a string.

For example, my string starts with a <code>:</code> and I want to remove that only. There are several occurrences of <code>:</code> in the string that shouldn't be removed.

I am writing my code in Python.

Remove the first character of a string

Python

我想删除字符串的第一个字符。例如，我的字符串以:开头，我只想删除它。字符串中有几个不应该删除的:。我正在用Python编写代码。

问删除字符串的第一个字符
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