01 invalid token

Question

Hey been learning python3 for a while.

Came across dictionaries and the dictionary_name.get() method and tried to get a random key value.

The problem:

data= {}

data.get('key',1)

it works and returns 1

But instead if I use data.get('key',01) it says invalid token why is that?

See [this](http://stackoverflow.com/questions/1837874/invalid-token-when-using-octal-numbers). Octal definition has changed for Python3 — Ricardo Cárdenes, Aug 19 '14 at 11:37
Because `01` isn't a valid token - see https://docs.python.org/3.0/whatsnew/2.6.html#pep-3127 — jonrsharpe, Aug 19 '14 at 11:37

score 5 · Answer 1 · answered Aug 19 '14 at 11:37

In Python 2.x, integer literals starting with 0 were interpreted as octal numbers. In Python 3.x, octal numbers are written with the prefix 0o instead. To avoid that old code changes meaning without any warning, literals starting with just 0 are a syntax error now.

01 invalid token

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