The escaping problem of "Python" Pymongo query

A regular query was used when querying MONGO

Set string to str = '/ab/cd.ef?g= '

There is no match directly with the regular query.

Collection.find ({"re": {'$regex': str},' b': {'  $nin': [False]}}). Count ()

The reason is/. ？ are special characters in regular expressions and need to be escaped with "\" If you want to preserve the original meaning.

Change the string to str = ' \/ab\/cd\.ef\?g= '

However, since "\" is a special symbol in Python, use "\ \" to represent

Define a function of character escapes

deftransfer_str (str): New_str=""Special= ['/','^','$','*','+','?','.']     forCinchStr:ifCinchSpecial:new_str+='\\'New_str+=CreturnNew_str

and then call

Collection.find ({"re": {'$regex': Transfer_str (str)}, ' b ': {'$nin': [False]}}). Count ()

So we can get the right results.

"Python" Pymongo the Escape problem when querying