1. Introduction to Python:
Python is a high-level programming language, involving a wide range of fields, active community, maintained by a core development team, compared with other languages, easy to learn, strong portability, strong scalability, easy maintenance, there are a large number of standard libraries available for use.
2.Python version:
Currently popular versions: python2.7, python3
Interpreter types:
- cpython interpreter (*)
- jpython interpreter
- ironPython interpreter
- rubyPyhton interpreter
.....
- pypy interpreter
3. Language bar coding format (any language follows this coding format)
ascii: use 1 byte = 8 bits to represent everything a computer can express.
2**8 = 256
00000000 -> A
00000001 -> B
00000010 -> C
00000011
00000100
unicode: Universal code, use 4 bytes = 32 bits for the corresponding relationship
2**32 = 4294967296
00000000 00000000 0000000 -> A
0000000010-> B
00000000 0000000010-> C 00000000 10000000 00010000
00011010 -> Purple
UTF-8: Compressing the national code Section = 24 bits gbk: Correspondence to the text of Asian countries PS: Chinese 2 bytes = 16 bits
4. IDE tool specially developed by python: python
5. Start python becomes:
variable: