[Python-checkins] CVS: python/dist/src/Objects abstract.c

Barry A. Warsaw bwarsaw@cnri.reston.va.us
Thu, 10 Jun 1999 19:11:24 -0400 (EDT)

Update of /projects/cvsroot/python/dist/src/Objects
In directory anthem:/projects/python/develop/bwarsaw/src/Objects

Modified Files:
      Tag: string_methods
Log Message:
int_from_string(): Removed.  PyNumber_Int() now uses

float_from_string(): Removed. PyNumber_Float() now uses

long_from_string(): Changes are best described by the comment above
the function

/* There are two C API functions for converting a string to a long,
 * PyNumber_Long() and PyLong_FromString().  Both are used in builtin_long, 
 * reachable from Python with the built-in function long().
 * The difference is this: PyNumber_Long will raise an exception when the
 * string cannot be converted to a long.  The most common situation is
 * where a float string is passed in; this raises a ValueError.
 * PyLong_FromString does not raise an exception; it silently truncates the 
 * float to an integer.
 * You can see the different behavior from Python with the following:
 * long('9.5')
 * => ValueError: invalid literal for long(): 9.5
 * long('9.5', 10)
 * => 9L
 * The first example ends up calling PyNumber_Long(), while the second one
 * calls PyLong_FromString().

The fact that builtin long takes an optional base is a new feature to
make it more compatible with string.atol().