Identifiers

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Identifiers

Identifiers are the names given to variables, constants, and subroutines.

Variables

Variables should have lowercase names, with each word separated by an underscore. For example:
- this_is_my_variable
- user_money
Variable should also have descriptive names, for example user_money is much better than this_is_my_variable.

Constants

Constants should be named using the same rules as variables, but uppercase.

Subroutines

Subroutines should have lowercase names, with each word separated by an underscore. For example:
- calculate_sum()
- get_user_id()
Subroutines should have descriptive names where possible.

Global rules

In general, all identifiers should be descriptive.
Characters which might be confused should be avoided, for example:
- 0 and O.
- 1 and l (lower case L).

1Introduction to Python

1.1Python

1.1.1Python

1.2Input & Output

1.2.1Input & Output

1.3Data Types

1.3.1Data Types

1.4Variables & Constants

1.4.1Variables & Constants

1.5Operators

1.5.1Arithmetic & Relational Operators

1.5.2Boolean & Assignment Operators 2

1.6Program Flow

1.6.1Selection

1.6.2Iteration

2Data Structures

2.1Lists & Strings

2.1.1Lists

2.1.2Strings

2.2File Handling

2.2.1File Handling

3Modularity

3.1Subroutines

3.1.1Subroutines

3.2Data Flow

3.2.1Data Flow

4Good Practice

4.1Naming & Whitespace

4.1.1Identifiers

4.1.2Whitespace

4.2Comments

4.2.1Comments

4.3Exceptions

4.3.1Exceptions

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