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Text File | 1994-01-26 | 1.3 KB | 46 lines | [TEXT/R*ch] |
- What is Python?
- ---------------
-
- Python is an interpreted, interactive, object-oriented programming
- language. It incorporates modules, exceptions, dynamic typing, very
- high level dynamic data types, and classes. Python combines
- remarkable power with very clear syntax. It has interfaces to many
- system calls and libraries, as well as to various window systems, and
- is extensible in C or C++. It is also usable as an extension language
- for applications that need a programmable interface. Finally, Python
- is portable: it runs on many brands of UNIX, on the Mac, and on
- MS-DOS.
-
- As a short example of what Python looks like, here's a script to
- print prime numbers (not blazingly fast, but readable!). When this
- file is made executable, it is callable directly from the UNIX shell
- (if your system supports #! in scripts and the python interpreter is
- installed at the indicated place).
-
- #!/usr/local/bin/python
-
- # Print prime numbers in a given range
-
- def main():
- import sys
- min, max = 2, 0x7fffffff
- if sys.argv[1:]:
- min = int(eval(sys.argv[1]))
- if sys.argv[2:]:
- max = int(eval(sys.argv[2]))
- primes(min, max)
-
- def primes(min, max):
- if 2 >= min: print 2
- primes = [2]
- i = 3
- while i <= max:
- for p in primes:
- if i%p == 0 or p*p > i: break
- if i%p <> 0:
- primes.append(i)
- if i >= min: print i
- i = i+2
-
- main()
-