4.1.4 Deprecated string functions

The following list of functions are also defined as methods of string and Unicode objects; see ``String Methods'' (section 2.3.6) for more information on those. You should consider these functions as deprecated, although they will not be removed until Python 3.0. The functions defined in this module are:

atof( s)
Deprecated since release 2.0. Use the float() built-in function.

Convert a string to a floating point number. The string must have the standard syntax for a floating point literal in Python, optionally preceded by a sign ("+" or "-"). Note that this behaves identical to the built-in function float() when passed a string.

Note: When passing in a string, values for NaN and Infinity may be returned, depending on the underlying C library. The specific set of strings accepted which cause these values to be returned depends entirely on the C library and is known to vary.

atoi( s[, base])
Deprecated since release 2.0. Use the int() built-in function.

Convert string s to an integer in the given base. The string must consist of one or more digits, optionally preceded by a sign ("+" or "-"). The base defaults to 10. If it is 0, a default base is chosen depending on the leading characters of the string (after stripping the sign): "0x" or "0X" means 16, "0" means 8, anything else means 10. If base is 16, a leading "0x" or "0X" is always accepted, though not required. This behaves identically to the built-in function int() when passed a string. (Also note: for a more flexible interpretation of numeric literals, use the built-in function eval().)

atol( s[, base])
Deprecated since release 2.0. Use the long() built-in function.

Convert string s to a long integer in the given base. The string must consist of one or more digits, optionally preceded by a sign ("+" or "-"). The base argument has the same meaning as for atoi(). A trailing "l" or "L" is not allowed, except if the base is 0. Note that when invoked without base or with base set to 10, this behaves identical to the built-in function long() when passed a string.

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