adding_two.py

# input=[10,20,[30,40,[50],[60,70]],[80],90] 
# l = []
# for i in input:    
    # if type(i) is list:
    #     for j in i:
    #         if type(j) is list:l.extend(j)
    #         else:l.append(j)
    # else:l.append(i)
# print l



# 2.Ques


# inp = 'You have 138 points'
# c = 0
# m = 0
# ina = inp.replace(' ','')
# s = list(ina)
# for i in s:
#     if i.isalpha():c += 1
#     else:m += 1
# print c
# print m


# inp = 'You have 138 points'
# c = 0
# m = 0
# s = list(inp)
# for i in s:
#     if i.isalpha():c += 1
#     elif i == ' ':pass
#     else:m += 1
# print c
# print m





# 3. Ques

# list1 = [1,'one',2,'two',3,'three']
# n = len(list1)
# for i in range(n-1,-1,-1):del list1[i]
# print list1