string Jinja2 用空格分割字符串
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Jinja2 Split string by white spaces
提问by elad.chen
I'm using Jinja2 template engine (+pelican).
我正在使用 Jinja2 模板引擎 (+pelican)。
I have a string saying "a 1", and I am looking for a way to split that string in two by using the white-space as the delimiter.
我有一个字符串，上面写着“a 1”，我正在寻找一种方法，通过使用空格作为分隔符将该字符串一分为二。
So the end result I'm looking for is a variable which holds the two values in a form of an array. e.g. str[0] evaluates to "a" & str[1] evaluates to "1".
所以我要寻找的最终结果是一个变量，它以数组的形式保存两个值。例如，str[0] 的计算结果为“a”，而 str[1] 的计算结果为“1”。
Thanks in advance.
提前致谢。
采纳答案by Lo?c
I had the same issue and didn't find anything useful, so I just created a custom filter :
我遇到了同样的问题并且没有发现任何有用的东西，所以我刚刚创建了一个自定义过滤器：
def split_space(string):
return string.strip().split()
Added it to the filter list (with flask):
将其添加到过滤器列表（带烧瓶）：
app = Flask(__name__)
def split_space(string):
return string.strip().split()
#some code here
if __name__ == '__main__':
app.jinja_env.filters['split_space'] = split_space
app.run()
And used it as such in the template :
并在模板中使用它：
{% if "string" in element|split_space %} ... {% endif %}
回答by Jakub Kotowski
Calling split on the string should do the trick:
在字符串上调用 split 应该可以解决问题：
"a 1".split()
回答by dragon
my solution is tested in iPython
我的解决方案在 iPython 中进行了测试
In [1]: from jinja2 import Template
In [2]: Template("{{s.split('-')}}").render(s='a-bad-string')
Out[2]: u"['a', 'bad', 'string']"
回答by User2403
I'd suggest to use something like:
我建议使用类似的东西：
str = "a 1 b 2 c 3"
val = atr.split()
Also, if you want to point a specific position then you can use something like:
此外，如果您想指向特定位置，则可以使用以下内容：
val1 = atr.split()[2]
This will put second value in val1.
这会将第二个值放入val1.
回答by Tim Raasveld
I made a little plugin that does the same as Lo?c's answer but it optionally specifying a separator. https://github.com/timraasveld/ansible-string-split-filter
我制作了一个与 Lo?c 的答案相同的小插件，但它可以选择指定一个分隔符。https://github.com/timraasveld/ansible-string-split-filter
It allows you to type:
它允许您键入：
# my_variable = 'a 1`
{ my_variable | split | join(' and ') } #=> a and 1
回答by Jeremy Jones
You can also do this with a decorator:
你也可以用装饰器来做到这一点：
from flask import Flask
app = Flask(__name__)
@app.template_filter('split_space')
def split_space_filter(s):
return s.strip().split()
if __name__ == '__main__':
app.run()
