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Append and Assign to a variable - Python

Need explanation. Please look the below code:

---------> Start.

family = ['Daddy','Mummy']

family ['Daddy', 'Mummy'] family.append('Child') family ['Daddy', 'Mummy', 'Child']

  • This works fine as intended.

The Problem: If i try to append second child to the family list and have it assigned to the same variable or different variable, nothing happens. Example:

family = family.append('Second Child') OR Totalfamily = family.append('Second Child')

Then, try to find the contents of family OR total family, nothing happens? Why please?

1 Answer

Brendan Whiting
.a{fill-rule:evenodd;}techdegree seal-36
Brendan Whiting
Front End Web Development Techdegree Graduate 84,735 Points

This appends 'Child' onto family.

family = family.append('Second Child')

This appends 'Second Child' onto family. But the append method doesn't return anything (so it returns None), it doesn't return the list as you might be thinking. So then what happens is the result (None) gets assigned to family, and now family is empty.