Append () Common errors

Example 1

empty = []

Print Empty.append ("Hi")

Output None

Print empty

Output ["Hi"]

Error: Direct print variable with append ()

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Example 2

Print [].append ("Hi")

Output None

Error: Direct Print list with append ()

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Example 3

List = [].append ("Hi")

Print List

Output None

Error: Print variable directly, but variable is list with append ()

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Next, let's check it out.

empty = []

Print type (empty.append (' Hi '))

Output <type "nonetype>

Print ([].append (' Hi '))

Output <type "nonetype>

List = [].append ("Hi")

Print List

Output <type "Nonetype" >

list = []

List.append ("Hi")

Print List

Output ["Hi]

Print type (list)

Output <type "Nonetype" >

So, print prints the list on the output list, prints a list of Nonetype (with append ()

or a variable or a variable of itself containing append (), the output is None

Append () Common errors