? ? x, y = 1, 2
? ? print(x, y)
? ? x, y = y, x
? ? print(x, y)

? ? str_list = ['I', 'like', 'python']
? ? str_join = " ".join(str_list)
? ? print(str_join)

? ? str = 'I like python and java0'
? ? print(str.split())

? ? print([0] * 10)
? ? print([8.3] * 10)

? ? x = {'a' : 1, 'b' : 2}
? ? y = {'b' : 3, 'c' : 4}
? ? z = {**x, **y}
? ? print(z)

? ? name = 'zhangsan'
? ? print(name[::-1])

? ? def get_a_string():
? ? ? ? a = 'George'
? ? ? ? b = 'is'
? ? ? ? c = 'cool'
? ? ? ? return a, b, c
? ? a, b, c = get_a_string()
? ? print(a, b, c)

? ? a = [1, 2, 3]
? ? b = [num * 2 for num in a if num is not 2]
? ? print(b)

? ? d = {'a' : 1, 'b' : 2, 'c' : 3}
? ? for key, val in d.items():
? ? ? ? print(key, val)

? ? l = ['a', 'b', 'c']
? ? for index, val in enumerate(l):
? ? ? ? print(index, val)

? ? a_list = list()
? ? a_dict = dict()
? ? a_set = set()

? ? name1 = " Gkere "
? ? name2 = "Gmerk///"
? ? print(name1.strip())
? ? print(name2.strip("/"))

? ? a = [1,2,3,4,5,3,2,2]
? ? print(max(set(a), key=a.count))

? ? import sys
? ? x = 1
? ? print(sys.getsizeof(x))

? ? from dicttoxml import dicttoxml
? ? d = {'a': 1, 'b': 2, 'c': 3}
? ? xml = dicttoxml(d, custom_root='test', attr_type=False)
? ? print(xml)

? ? l1 = [1, 2, 3]
? ? l2 = [4, 5]
? ? l1.extend(l2)
? ? print(l1)
? ? l3 = [1, 2, 3]
? ? l4 = [4, 5]
? ? l3.append(l4)
? ? print(l3)