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@ -91,6 +91,7 @@ So, here we go...
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+ [▶ Skipping lines?](#-skipping-lines)
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+ [▶ Teleportation](#-teleportation)
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+ [▶ Well, something is fishy...](#-well-something-is-fishy)
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+ [▶ Reverse all! *](#-reverse-all-)
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* [Section: Miscellaneous](#section-miscellaneous)
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+ [▶ `+=` is faster](#--is-faster)
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+ [▶ Let's make a giant string!](#-lets-make-a-giant-string)
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@ -3401,6 +3402,59 @@ Where's the Nobel Prize?
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---
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### ▶ Reverse all! *
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```py
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>>> a = bytearray('1234567890')
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>>> b = a
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>>> a
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bytearray(b'1234567890')
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>>> b
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bytearray(b'1234567890')
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>>> b.reverse()
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>>> b
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bytearray(b'0987654321')
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>>> a
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bytearray(b'0987654321')
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```
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I just want to reverse `b`, but `a` is also reversed!
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```py
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>>> aList = ['a', 'b', 'c', 'd', 'e']
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>>> bList = aList
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>>> aList
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['a', 'b', 'c', 'd', 'e']
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>>> bList
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['a', 'b', 'c', 'd', 'e']
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>>> bList.reverse()
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>>> bList
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['e', 'd', 'c', 'b', 'a']
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>>> aList
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['e', 'd', 'c', 'b', 'a']
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```
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I just want to reverse `bList`, but `aList` is also reversed!
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#### 💡 Explanation:
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* In Python, Assignment statements in Python do not copy objects, they create bindings between a target and an object.
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* If we want apply an new memory for our new variable, we need to use `copy.copy(x)` to execute shallow copying or `copy.deepcopy(x)` to execute deep copying.
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```py
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>>> a = bytearray(b'1234567890')
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>>> b = a.copy()
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>>> a
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bytearray(b'1234567890')
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>>> b
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bytearray(b'1234567890')
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>>> b.reverse()
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>>> b
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bytearray(b'0987654321')
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>>> a
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bytearray(b'1234567890')
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```
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### ▶ Well, something is fishy...
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<!-- Example ID: cb6a37c5-74f7-44ca-b58c-3b902419b362 --->
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```py
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@ -3439,9 +3493,6 @@ Shouldn't that be 100?
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TabError: inconsistent use of tabs and spaces in indentation
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```
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---
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---
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## Section: Miscellaneous
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