From a721abac299bb6529021000a71847486d531b41a Mon Sep 17 00:00:00 2001 From: Brett Cannon Date: Fri, 9 Sep 2016 14:57:09 -0700 Subject: Issue #26331: Implement the parsing part of PEP 515. Thanks to Georg Brandl for the patch. --- Lib/tokenize.py | 17 +++++++++-------- 1 file changed, 9 insertions(+), 8 deletions(-) (limited to 'Lib/tokenize.py') diff --git a/Lib/tokenize.py b/Lib/tokenize.py index ec79ec886d..825aa90646 100644 --- a/Lib/tokenize.py +++ b/Lib/tokenize.py @@ -120,16 +120,17 @@ Comment = r'#[^\r\n]*' Ignore = Whitespace + any(r'\\\r?\n' + Whitespace) + maybe(Comment) Name = r'\w+' -Hexnumber = r'0[xX][0-9a-fA-F]+' -Binnumber = r'0[bB][01]+' -Octnumber = r'0[oO][0-7]+' -Decnumber = r'(?:0+|[1-9][0-9]*)' +Hexnumber = r'0[xX](?:_?[0-9a-fA-F])+' +Binnumber = r'0[bB](?:_?[01])+' +Octnumber = r'0[oO](?:_?[0-7])+' +Decnumber = r'(?:0(?:_?0)*|[1-9](?:_?[0-9])*)' Intnumber = group(Hexnumber, Binnumber, Octnumber, Decnumber) -Exponent = r'[eE][-+]?[0-9]+' -Pointfloat = group(r'[0-9]+\.[0-9]*', r'\.[0-9]+') + maybe(Exponent) -Expfloat = r'[0-9]+' + Exponent +Exponent = r'[eE][-+]?[0-9](?:_?[0-9])*' +Pointfloat = group(r'[0-9](?:_?[0-9])*\.(?:[0-9](?:_?[0-9])*)?', + r'\.[0-9](?:_?[0-9])*') + maybe(Exponent) +Expfloat = r'[0-9](?:_?[0-9])*' + Exponent Floatnumber = group(Pointfloat, Expfloat) -Imagnumber = group(r'[0-9]+[jJ]', Floatnumber + r'[jJ]') +Imagnumber = group(r'[0-9](?:_?[0-9])*[jJ]', Floatnumber + r'[jJ]') Number = group(Imagnumber, Floatnumber, Intnumber) # Return the empty string, plus all of the valid string prefixes. -- cgit v1.2.1