python Programming Glossary: literal

http://stackoverflow.com/questions/10955703/accessing-a-python-int-literals-methods

a python int literals methods Since everything is an object in python even literals.. methods Since everything is an object in python even literals we are typically allowed to call methods directly on a literal... we are typically allowed to call methods directly on a literal. ex 'hello'.upper In theory it seems like the same thing should..

Python cannot handle numbers string starting with 0. Why?

http://stackoverflow.com/questions/13013638/python-cannot-handle-numbers-string-starting-with-0-why

My guess is that since 012 is no longer an octal literal constant in python3.x they disallowed the 012 syntax to avoid.. bugs. Consider your python2.x script which using octal literal constants a 012 013 Then you port it to python 3 and it still..

Key-ordered dict in python

http://stackoverflow.com/questions/1319763/key-ordered-dict-in-python

any performance hits for inserts and deletes which is the literal implication of the specs you express but does seem a pretty..

How to make the python interpreter correctly handle non-ASCII characters in string operations?

http://stackoverflow.com/questions/1342000/how-to-make-the-python-interpreter-correctly-handle-non-ascii-characters-in-stri

at the top of each source file that uses Unicode literals. See http docs.python.org tutorial interpreter.html#source.. the correct encoding in your text editor as well. The literal must have a u before it as in s.replace u The string s must..

What exactly do “u” and “r”string flags in Python, and what are raw string litterals?

http://stackoverflow.com/questions/2081640/what-exactly-do-u-and-rstring-flags-in-python-and-what-are-raw-string-litte

There's not really any raw string there are raw string literals which are exactly the string literals marked by a 'r' before.. there are raw string literals which are exactly the string literals marked by a 'r' before the opening quote. A raw string literal.. marked by a 'r' before the opening quote. A raw string literal is a slightly different syntax for a string literal in which..

when does Python allocate new memory for identical strings?

http://stackoverflow.com/questions/2123925/when-does-python-allocate-new-memory-for-identical-strings

So for example multiple occurrences of the same string literal within a single function will in all implementations I know..

Evaluating a mathematical expression in a string

http://stackoverflow.com/questions/2371436/evaluating-a-mathematical-expression-in-a-string

call last File stdin line 1 in module ValueError invalid literal for int with base 10 '2^4' I know that eval can work around..

What are “first class” objects? [closed]

http://stackoverflow.com/questions/245192/what-are-first-class-objects

language this can imply being expressible as an anonymous literal value being storable in variables being storable in data structures..

Escaping regex string in Python

http://stackoverflow.com/questions/280435/escaping-regex-string-in-python

this is useful if you want to match an arbitrary literal string that may have regular expression metacharacters in it...

Python “is” operator behaves unexpectedly with integers

http://stackoverflow.com/questions/306313/python-is-operator-behaves-unexpectedly-with-integers

happened here why is this False 257 is 257 True # yet the literal numbers compare properly I am using Python 2.5.2. Trying some..

Can I add custom methods/attributes to built-in Python types?

http://stackoverflow.com/questions/4698493/can-i-add-custom-methods-attributes-to-built-in-python-types

of the effect desired. Unfortunately objects created by literal syntax will continue to be of the vanilla type and won't have..

Why can't Python's raw string literals end with a single backslash?

http://stackoverflow.com/questions/647769/why-cant-pythons-raw-string-literals-end-with-a-single-backslash

can't Python's raw string literals end with a single backslash Technically any odd number of.. stdin line 1 r' ' ^ SyntaxError EOL while scanning string literal r' ' ' ' r' ' File stdin line 1 r' ' ^ SyntaxError EOL while.. stdin line 1 r' ' ^ SyntaxError EOL while scanning string literal It seems like the parser could just treat backslashes in raw..

Converting a String to Dictionary?

http://stackoverflow.com/questions/988228/converting-a-string-to-dictionary

Starting in Python 2.6 you can use the built in ast.literal_eval import ast ast.literal_eval 'muffin' 'lolz' 'foo' 'kitty'.. you can use the built in ast.literal_eval import ast ast.literal_eval 'muffin' 'lolz' 'foo' 'kitty' 'muffin' 'lolz' 'foo' 'kitty'.. is safer than using eval . As its own docs say help ast.literal_eval Help on function literal_eval in module ast literal_eval..

Porting invRegex.py to Javascript (Node.js)

http://stackoverflow.com/questions/20815278/porting-invregex-py-to-javascript-node-js

will become false upon the first call of 'next'. function Literal literal this.literal literal Literal.prototype.first function.. of 'next'. function Literal literal this.literal literal Literal.prototype.first function this.i 0 Literal.prototype.next function.. literal Literal.prototype.first function this.i 0 Literal.prototype.next function this.i Literal.prototype.ok function..

Evaluating a mathematical expression in a string

http://stackoverflow.com/questions/2371436/evaluating-a-mathematical-expression-in-a-string

from __future__ import division from pyparsing import Literal CaselessLiteral Word Combine Group Optional ZeroOrMore Forward.. import division from pyparsing import Literal CaselessLiteral Word Combine Group Optional ZeroOrMore Forward nums alphas.. term factor multop factor expr term addop term point Literal . e CaselessLiteral E fnumber Combine Word nums nums Optional..