Other Library Enhancements
os module
- More complete set of POSIX system calls
- Functionality of the popen2 module now included
popen(command [, mode [, bufsize]])
popen2(command [, mode [, bufsize]])
popen3(command [, mode [, bufsize]])
popen4(command [, mode [, bufsize]])
re module
- Support for Unicode strings
- A few new regular expression patterns
random module
- Extensive changes and cleanup of the API
- Old whrandom module deprecated
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