Python first week (first day) My Python growth is one months to get the Python data mining done! (01)

Syntax Essentials for Python

1. Notes

#表示注释, no block comment

2. Variable (weakly typed language), no need to declare type

For example, a, b = ' python ', 10

3. Built-in data types

Numeric type (shape, float, plural) boolean type string None

4. Mathematical operations

Division remainder:% Division rounding://exponentiation not supported + +,--

5. Comparison operators (> <, etc.), logical operators (and or not) do not support | | , &&

6. Conditions and cycles

Code indentation

If, if ... else, if: elif. Else no switch, case syntax

Empty list, tuples, characters, None = False

For item in collection

Range (1,10,2) interval =>[1,10)

7. Break (non-normal loop end), continue (normal cycle end)

Python first week (first day) My Python growth is one months to get the Python data mining done! (01)