Python Introduction and basic
practice.

list1 = [1,2,3,4]
list2 = [2,4,5,6]
list3 = [2,6,7,8]
result = list()
result.extend(i for i in list1 if i not in (list2+list3) and i not in result)
result.extend(i for i in list2 if i not in (list1+list3) and i not in result)
result.extend(i for i in list3 if i not in (list1+list2) and i not in result)

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f = foo()
format(f)

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z=set('abc')
z.add('san')
z.update(set(['p', 'q']))
z

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print("%.2f"%x)

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z=set('abc$de')
'a' in z

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>>>list1 = [1, 3]
>>>list2 = list1
>>>list1[0] = 4
>>>print(list2)

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l=[1, 0, 2, 0, 'hello', '', []]
list(filter(bool, l))

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x = 'abcd'
for i in range(len(x)):
    print(i)

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>>>"a"+"bc"

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def addItem(listParam):
    listParam += [1]
 
mylist = [1, 2, 3, 4]
addItem(mylist)
print(len(mylist))

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A = [[1, 2, 3],
     [4, 5, 6],
     [7, 8, 9]]

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print("Hello {0[0]} and {0[1]}".format(('foo', 'bin')))

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x<<2

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class tester:
    def __init__(self, id):
        self.id = str(id)
        id="224"
 
>>>temp = tester(12)
>>>print(temp.id)

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2**(3**2)
 (2**3)**2
 2**3**2

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