A python code to convert a number from any base to the base of 10 giving errors . What is wrong with this code? -

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import math      def baseencode(number, base):     ##converting number of base base10      if number == 0:         return '0'      in range(0,len(number)):         if number[i]!= [a-z]:             num = num + number[i]*pow(i,base)         else :             num = num + (9 + ord(number[i])) *pow(i,base)     return num  = baseencode('20',5) print

errors 

traceback (most recent call last):   file "doubtrob.py", line 19, in <module>     = baseencode('20',5)   file "doubtrob.py", line 13, in baseencode     if number[i]!= [a-z]: nameerror: global name 'a' not defined

isn't int(x, base) need?

int('20',5) # returns integer 10

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