How to pass a C structure in Python?

How do you pass argument to functions in Python?

• page = """ <div class="product-primarydata "> <p class="p product-price"> <span class="price-mrp"><del>Rs.100</del></span> <span class="price-fsp">Rs.58</span> </p> <div class="p"> <span class="rating-wrapper-big "> <span class="rating" style="width: 78%"></span> </span>1077 Ratings </div> """ def get_tag(self,start,end,page): start = page.find(start)+len(start) end = page[start:].find(end)+start return start,end first,last = get_tag('<span class="price-fsp">','</span>',page) but python shows: TypeError: get_tag() takes exactly 4 arguments (3 given) please find the error !!!!

• Answer:

  Is get_tag function part of a class ?. If not then just remove self from the function definition i.e. def get_tag(start,end,page): If get_tag is part of a class. The create instance of the class and use the instance to invoke get_tag. for e.g. class Tagging(object):   def get_tag(self, start, end, page):     # your code     return tag aTag = Tagging() print aTag.get_tag() Also if you are new to python read up on Object Oriented Programming in Python to make sense of self keyword.