Python Learning notes-basic essentials

1, Python's int type has no size limit (or only by machine memory limit), str type with single or double quotation marks, as long as the symmetry is OK. (attention to fixation)

2. Use [] to denote an entry of a sequence such as an access string (index starting at 0)

3. Type conversion

4, the dynamic type mechanism, the variable can be any type, can switch freely.

5.

6. Identity operator

7. Comparison operators

8. Member Operators

9. Logical operators

10. Control Flow Statements

Pass is empty statement, good any processing.

11. While statement

12. In statement

13. Exception Handling

14. Arithmetic Operators

Python Learning notes-basic essentials