# a = [1 , 3 , 4 , 6 , 7]

# print(dir(a))
# help(a.upper)
# print(a.upper())
# help(a.zfill)
# print(a.zfill(10))

# aa,*bb,cc = a
# print(aa)
# print(bb)
# print(cc)

# b = {item for item in a if item % 2 == 0}
# print(b)

# b = {x:ord(x) for x in 'abc'}
# print(b)

# c = {x : ord(x) for x in a if x % 2 == 0}
# **************************
 
# a = 6 
# b = 7
# c = 13

# mac = a if a > b else b

# max = (a if a > b else b) if (a if a > b else b) > c else c
# print (max)
# ********************

# a = [1 , 2 , 3]

# def qiuhe(a):
#     head , *shenti = a
#     return head + qiuhe(shenti) if shenti else head

# b = qiuhe(a)
# print(b)
# ***********************