Python learning internal execution process, internal execution process, coding (i)

Python's execution Flow:

Load Memory---Lexical analysis---syntax analysis---compile---"convert bytecode----" Convert to Machine code----"Supply CPU scheduling

Python's Code:

1.256 representations of ASCII 2.

2. UNICODE Best 16 bits represent 2 bytes

3. UTF-8 can save resources by representing 8 bits in 8 digits.

Notes for Python:

Character ' # ': Only one line is commented

Character "'": Comment multiple lines

Tutorial parameters for Python:

Using the argv parameter of the SYS module, the input parameters and the script name are captured and an array is returned

Python byte code:

PYC file and py file, read py file, generate PYc file. Order: py equals PYC, directly read the PYc file, py is not equal to PYC, compile the py file, regenerate PYc file

Python learning internal execution process, internal execution process, coding (i)