Note_Tech

All technological notes.

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Python Syntax

Python syntax can be executed by writing directly in the Command Line or in a python file
Expression: the code that returns a value.
- Example: 1+1
Statement: the operation on a value.
- Example: a=1
- a program is formed by a series of statements
- can put statements in one line using semicolon
  - Example: a=1;print(a)

Indentation: the spaces at the beginning of a code line.
Python uses indentation to indicate a block of code.
- Python will give you an error if you skip the indentation.
```
if 5 > 2:
print("Five is greater than two!") #error
```
- The number of spaces is up to you as a programmer, the most common use is four, but it has to be at least one.
```
if 5 > 2:
 print("Five is greater than two!") # one space
if 5 > 2:
        print("Five is greater than two!") # eight spaces
```
You have to use the same number of spaces in the same block of code, otherwise Python will give you an error.

if 5 > 2:
 print("Five is greater than two!")
        print("Five is greater than two!")  #error, should use same number of spaces in the same block