``````

In [1]:

a_l = [0, 1, 2]
b_l = [10, 20, 30]

a_t = (0, 1, 2)
b_t = (10, 20, 30)

a_s = 'abc'
b_s = 'xyz'

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In [2]:

print(a_l + b_l)

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[0, 1, 2, 10, 20, 30]

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In [3]:

print(a_t + b_t)

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(0, 1, 2, 10, 20, 30)

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In [4]:

print(a_s + b_s)

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abcxyz

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In [5]:

# print(a_l + 3)
# TypeError: can only concatenate list (not "int") to list

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In [6]:

print(a_l + [3])

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[0, 1, 2, 3]

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In [7]:

# print(a_t + (3))
# TypeError: can only concatenate tuple (not "int") to tuple

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In [8]:

print(a_t + (3, ))

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(0, 1, 2, 3)

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``````

In [9]:

a_l += b_l
print(a_l)

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[0, 1, 2, 10, 20, 30]

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In [10]:

a_t += b_t
print(a_t)

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(0, 1, 2, 10, 20, 30)

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In [11]:

a_s += b_s
print(a_s)

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abcxyz

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In [12]:

print(b_l * 3)

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[10, 20, 30, 10, 20, 30, 10, 20, 30]

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In [13]:

print(3 * b_l)

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[10, 20, 30, 10, 20, 30, 10, 20, 30]

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In [14]:

print(b_t * 3)

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(10, 20, 30, 10, 20, 30, 10, 20, 30)

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In [15]:

print(3 * b_t)

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(10, 20, 30, 10, 20, 30, 10, 20, 30)

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In [16]:

print(b_s * 3)

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xyzxyzxyz

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In [17]:

print(3 * b_s)

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xyzxyzxyz

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In [18]:

# print(b_l * 0.5)
# TypeError: can't multiply sequence by non-int of type 'float'

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In [19]:

print(b_l * -1)

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[]

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In [20]:

b_l *= 3
print(b_l)

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[10, 20, 30, 10, 20, 30, 10, 20, 30]

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In [21]:

b_t *= 3
print(b_t)

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(10, 20, 30, 10, 20, 30, 10, 20, 30)

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In [22]:

b_s *= 3
print(b_s)

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xyzxyzxyz

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In [23]:

a_l = [0, 1, 2]
b_l = [10, 20, 30]

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In [24]:

c_l = a_l + b_l * 3
print(c_l)

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[0, 1, 2, 10, 20, 30, 10, 20, 30, 10, 20, 30]

``````