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I have a list which has repeating items and I want a list of the unique items with their frequency. For example, I have [\'a\', \'a\', \'b\', \'b\', \'b\'开发者_开发问答], and I want [(\'a\', 2), (\
i have created a login page for my project \"student information system\" which contain text fields username,userid and password.i tried to store the value of use开发者_如何学JAVArname and userid in s
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