Error with Eval

[davidnicol]

BPO	5133
Nosy	@rhettinger, @ezio-melotti

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = None
closed_at = <Date 2009-02-02.19:02:54.879>
created_at = <Date 2009-02-02.18:52:30.828>
labels = ['build', 'invalid']
title = 'Error with Eval'
updated_at = <Date 2009-02-02.19:04:12.212>
user = 'https://bugs.python.org/davidnicol'

bugs.python.org fields:

activity = <Date 2009-02-02.19:04:12.212>
actor = 'ezio.melotti'
assignee = 'none'
closed = True
closed_date = <Date 2009-02-02.19:02:54.879>
closer = 'rhettinger'
components = ['None']
creation = <Date 2009-02-02.18:52:30.828>
creator = 'davidnicol'
dependencies = []
files = []
hgrepos = []
issue_num = 5133
keywords = []
message_count = 3.0
messages = ['80982', '80984', '80985']
nosy_count = 3.0
nosy_names = ['rhettinger', 'ezio.melotti', 'davidnicol']
pr_nums = []
priority = 'normal'
resolution = 'not a bug'
stage = None
status = 'closed'
superseder = None
type = 'compile error'
url = 'https://bugs.python.org/issue5133'
versions = ['Python 2.6']

[davidnicol]

The single line statements:

eval("08") ; and
eval("09")

both crash; while

eval("07") works fine

[rhettinger]

They don't crash. They raise a SyntaxError because the "08" and "09"
are invalid octal literals.

If you're working with decimal literals that are padded on the left with
zeroes, those need to be stripped off before conversion:

'000987'.lstrip('0') --> '987'

Or, you can use the int() function:

   int('000987')

[ezio-melotti]

The leading zero is used to define octal numbers, 8 and 9 are not valid
octal digits, see
http://docs.python.org/reference/lexical_analysis.html#integer-and-long-integer-literals

Also, you don't need to use eval to reproduce that behavior.

The number displayed is the decimal equivalent:
>>> 07
7
>>> 010
8