From 06ba34c5d47751f9a5ae8e16bf1a7cf12c871609 Mon Sep 17 00:00:00 2001 From: Guido van Rossum Date: Mon, 1 Dec 1997 15:25:19 +0000 Subject: In string.split(), honor maxsplit (if > 0). In string.splitfields(), ignore maxsplit if <= 0, rather than ignoring maxsplit=0 but effectively treating negative numbers the same as maxsplit=1. Also made the test for maxsplit slightly more efficient (set it to the length of the string when <= 0 so the test for its presence can be omitted from the loop). --- Lib/string.py | 10 ++++++++-- Lib/stringold.py | 10 ++++++++-- 2 files changed, 16 insertions(+), 4 deletions(-) diff --git a/Lib/string.py b/Lib/string.py index 3f65978..2139a75 100644 --- a/Lib/string.py +++ b/Lib/string.py @@ -74,11 +74,17 @@ def split(s, sep=None, maxsplit=0): if sep is not None: return splitfields(s, sep, maxsplit) res = [] i, n = 0, len(s) + if maxsplit <= 0: maxsplit = n + count = 0 while i < n: while i < n and s[i] in whitespace: i = i+1 if i == n: break + if count >= maxsplit: + res.append(s[i:]) + break j = i while j < n and s[j] not in whitespace: j = j+1 + count = count + 1 res.append(s[i:j]) i = j return res @@ -93,6 +99,7 @@ def splitfields(s, sep=None, maxsplit=0): if nsep == 0: return [s] ns = len(s) + if maxsplit <= 0: maxsplit = ns i = j = 0 count = 0 while j+nsep <= ns: @@ -100,8 +107,7 @@ def splitfields(s, sep=None, maxsplit=0): count = count + 1 res.append(s[i:j]) i = j = j + nsep - if (maxsplit and (count >= maxsplit)): - break + if count >= maxsplit: break else: j = j + 1 diff --git a/Lib/stringold.py b/Lib/stringold.py index 3f65978..2139a75 100644 --- a/Lib/stringold.py +++ b/Lib/stringold.py @@ -74,11 +74,17 @@ def split(s, sep=None, maxsplit=0): if sep is not None: return splitfields(s, sep, maxsplit) res = [] i, n = 0, len(s) + if maxsplit <= 0: maxsplit = n + count = 0 while i < n: while i < n and s[i] in whitespace: i = i+1 if i == n: break + if count >= maxsplit: + res.append(s[i:]) + break j = i while j < n and s[j] not in whitespace: j = j+1 + count = count + 1 res.append(s[i:j]) i = j return res @@ -93,6 +99,7 @@ def splitfields(s, sep=None, maxsplit=0): if nsep == 0: return [s] ns = len(s) + if maxsplit <= 0: maxsplit = ns i = j = 0 count = 0 while j+nsep <= ns: @@ -100,8 +107,7 @@ def splitfields(s, sep=None, maxsplit=0): count = count + 1 res.append(s[i:j]) i = j = j + nsep - if (maxsplit and (count >= maxsplit)): - break + if count >= maxsplit: break else: j = j + 1 -- cgit v0.12