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1 # flake8-eyeo | |
2 | |
3 A [flake8](https://flake8.readthedocs.io) extension that checks for compliance | |
4 with the | |
5 [Adblock Plus coding style guide](https://adblockplus.org/coding-style#python) | |
6 which is used for all eyeo projects, and some bad practices which flake8 doesn't | |
7 handle by default. | |
8 | |
9 | |
10 ## Installation | |
11 | |
12 Run `python setup.py install`. | |
13 | |
14 | |
15 ## Usage | |
16 | |
17 Just run `flake8` (you have to install it seperately) on your source files. | |
18 After installation the `flake8-eyeo` extension is active by default. | |
19 | |
20 | |
21 ## Warnings | |
22 | |
23 ### Readability and consistency | |
24 | |
25 * `A101`: Loop over a tuple or set literal; use lists for data that have order | |
26 * `A102`: Membership check on a tuple or list literal; use a set here | |
27 * `A103`: Yoda condition | |
28 * `A104`: `map()` or `filter()` called with lambda function | |
29 * `A105`: Type called with literal or comprehension where a | |
30 literal/comprehension of that type can be used directly | |
31 * `A106`: Use augment assignment | |
32 * `A107`: `%` operator used for string formatting; this mechanism | |
33 has been superseded by the string's `format()` method | |
34 * `A108`: `+` operator to concatenate more than two strings | |
35 * `A110`: Write single-line string literals as represented by `repr()` | |
36 * `A111`: Redundant parantheses | |
37 * `A112`: Use `from __future__ import unicode_literals` instead of | |
38 prefixing literals with "u" | |
39 | |
40 | |
41 ### Redundancy and complexity | |
42 | |
43 * `A201`: Redundant or superfluos `global` or `nonlocal` declaration | |
44 * `A202`: Dead code after block is left | |
45 * `A303`: Unused expression | |
46 * `A204`: Redundant or superfluos pass statement | |
47 * `A205`: Superfluos empty block | |
48 * `A206`: Extraneous `else` statement after block is left | |
49 * `A207`: Duplicate key in dict or set | |
50 | |
51 | |
52 ### Error-prone practices | |
53 | |
54 * `A301`: Discouraged APIs | |
55 * `A302`: Redefinition of built-in name | |
56 * `A303`: Non-default source file encoding | |
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