如何在一个文本块中找到所有已知的成分字符串？

Question

考虑到一系列成分：

text = """Ingredients: organic cane sugar, whole-wheat flour,
       mono & diglycerides. Manufactured in a facility that uses nuts."""

如何从postgres数据库中提取成分，或者在elasticsearch索引中找到它们，而不使用匹配的标记，比如Ingredients:或{}？在

预期产出为：

^{pr2}$

Answer 1

这个Python代码给出了以下输出：['organic cane sugar', 'whole-wheat flour', 'mono & diglycerides'] 它要求配料在“配料：”后面，所有配料都要列在“.”之前，就像你的情况一样。在

import re
text = """Ingredients: organic cane sugar, whole-wheat flour,
   mono & diglycerides. Manufactured in a facility that uses nuts."""

# Search everything that comes after 'Ingredients: ' and before '.'
m = re.search('(?<=Ingredients: ).+?(?=\.)', text, re.DOTALL) # DOTALL: make . match newlines too
items = m.group(0).replace('\n', ' ').split(',') # Turn newlines into   spaces, make a list of items separated by ','
items = [ i.strip() for i in items ] # Remove leading whitespace in each item
print items