39d526bde48d98af4fa27906e85db0399b6aa8b1 test: Bump linter versions (Duncan Dean)
Pull request description:
As per #19346, `mypy==0.700` was incompatible with Python 3.8.
I've bumped the versions of all the linters to their latest stable versions.
Checked with both Python 3.7 and 3.8 and everything still seems to work fine.
ACKs for top commit:
hebasto:
ACK 39d526bde48d98af4fa27906e85db0399b6aa8b1, I have reviewed the code and it looks OK, I agree it can be merged.
Tree-SHA512: f3ee7fda8095aa25aa68685e863076d52a6b82649770d24b0064d652763c0ceb8ebcbf9024fc74fca45c754e67b2a831dd070b3af23bc099140e6d27e89a5319
3d0a82cff8cbb809876e82dbe62d14d2adc07d94 devtools: Accomodate block-style copyright blocks (Ben Woosley)
0ef0e51fe4bb592e67255776b5a0ba04679fb8c4 lint: Bump flake8 to 3.7.8 (Ben Woosley)
838920704ad90a71cf288b700052503db8abb17e lint: Disable flake8 W504 warning (Ben Woosley)
b21680baf5391a602b295b9d7d0ef66553661cb9 test/contrib: Fix invalid escapes in regex strings (Ben Woosley)
Pull request description:
This is a second go at #15221, fixing new lints in:
W504 line break after binary operator
W605 invalid escape sequence
F841 local variable 'e' is assigned to but never used
This time around:
* One commit per rule, for easier review
* I went with the PEP-8 style of breaking before binary operators
* I looked into the raw regex newline issue, and found that raw strings with newlines embedded do work appropriately. E.g. run `re.match(r" \n ", " \n ")` to check this for yourself. `re.MULTILINE` exists to modify `^` and `$` in multiline scenarios, but all of these searches are per-line.
ACKs for top commit:
practicalswift:
ACK 3d0a82cff8cbb809876e82dbe62d14d2adc07d94 -- diff looks correct
Tree-SHA512: bea0c144cadd72e4adf2e9a4b4ee0535dd91a8e694206924cf8a389dc9253f364a717edfe9abda88108fbb67fda19b9e823f46822d7303c0aaa72e48909a6105
948d8f4f10c31220ba4b6779cc862e2b6a0af5f6 lint: Enable python linters via an array (Ben Woosley)
Pull request description:
This assures consistent recording of the enabled linters.
This applies the same fix as #15170 to lint-python.sh
Tree-SHA512: 6d03f919e86e7c2465475c88b25dd84391282bcc11728078024daf0432a7dccddf9e4a2cdae35d6ef374971cb4e12f0fa21b58f757e25f2fe7c12ceb4f4b2c57
68400d8b96 tests: Use explicit imports (practicalswift)
Pull request description:
Enable automatic detection of undefined names in Python tests scripts. Remove wildcard imports.
Wildcard imports make it unclear which names are present in the namespace, confusing both readers and many automated tools.
An additional benefit of not using wildcard imports in tests scripts is that readers of a test script then can infer the rough testing scope just by looking at the imports.
Before this commit:
```
$ contrib/devtools/lint-python.sh | head -10
./test/functional/feature_rbf.py:8:1: F403 'from test_framework.util import *' used; unable to detect undefined names
./test/functional/feature_rbf.py:9:1: F403 'from test_framework.script import *' used; unable to detect undefined names
./test/functional/feature_rbf.py:10:1: F403 'from test_framework.mininode import *' used; unable to detect undefined names
./test/functional/feature_rbf.py:15:12: F405 bytes_to_hex_str may be undefined, or defined from star imports: test_framework.mininode, test_framework.script, test_framework.util
./test/functional/feature_rbf.py:17:58: F405 CScript may be undefined, or defined from star imports: test_framework.mininode, test_framework.script, test_framework.util
./test/functional/feature_rbf.py:25:13: F405 COIN may be undefined, or defined from star imports: test_framework.mininode, test_framework.script, test_framework.util
./test/functional/feature_rbf.py:26:31: F405 satoshi_round may be undefined, or defined from star imports: test_framework.mininode, test_framework.script, test_framework.util
./test/functional/feature_rbf.py:26:60: F405 COIN may be undefined, or defined from star imports: test_framework.mininode, test_framework.script, test_framework.util
./test/functional/feature_rbf.py:30:41: F405 satoshi_round may be undefined, or defined from star imports: test_framework.mininode, test_framework.script, test_framework.util
./test/functional/feature_rbf.py:30:68: F405 COIN may be undefined, or defined from star imports: test_framework.mininode, test_framework.script, test_framework.util
$
```
After this commit:
```
$ contrib/devtools/lint-python.sh | head -10
$
```
Tree-SHA512: 3f826d39cffb6438388e5efcb20a9622ff8238247e882d68f7b38609877421b2a8e10e9229575f8eb6a8fa42dec4256986692e92922c86171f750a0e887438d9
ea04bf7862 Enable flake8 warning F841 ("local variable 'foo' is assigned to but never used") (practicalswift)
169f3e8637 Remove assigned but never used local variables (practicalswift)
Pull request description:
Remove assigned but never used local variables. Enable Travis checking for unused local variables.
Tree-SHA512: d6052ec9044c5d1f03d874ea3c8addd5a156779213ef9200f89d3ae53230f2fd1691aff405c3dae14178e5ef09912c4432e92f606ef4a5220ed9daa140cdee81
341f7c7b0e macOS fix: Check for correct version of flake8 to avoid spurious warnings. The brew installed flake8 version is Python 2 based and does not work. (practicalswift)
908a559f33 macOS fix: Add excludes for checks added in the newer shellcheck version installed by brew (practicalswift)
ec4d57bbb3 macOS fix: Work around empty (sub)expression error when using BSD grep (practicalswift)
b57d7d92fe macOS fix: Avoid mapfile due to ancient version of bash shipped with macOS (practicalswift)
Pull request description:
The linters are thoroughly tested under Ubuntu which is what we use in Travis. When reading #14041 I understood that some developers were experiencing problems when running the linters on their local machines.
Assuming these local machines were running macOS I installed a fresh macOS VM, followed the instructions in `build-osx.md` and ran the linters.
This PR contains the changes needed to make `lint-all.sh` run as expected.
Ideally the linters would continuously run also under a Travis macOS environment to make sure we catch these kind of issues before merge.
Tree-SHA512: b39c9a970d14d27db1fb592539923c0bc676b5217f415d02fda3f17bf54d46faa172376e8a3ecab07ca68a3acba9aebe00b2b1b2161b2a36b85fbb672e7efb5c
fa3c910bfeab00703c947c5200a64c21225b50ef test: Move linters to test/lint, add readme (MarcoFalke)
Pull request description:
This moves the checks and linters from `devtools` to a subfolder in `test`. (Motivated by my opinion that the dev tools are mostly for generating code and updating the repo whereas the linters are read-only checks.)
Also, adds a readme to clarify that checks and linters are only meant to prevent bugs and user facing issues, not merely stylistic preference or inconsistencies. (This is motivated by the diversity in developers and work flows as well as existing code styles. It would be too disruptive to change all existing code to a single style or too burdensome to force all developers to adhere to a single style. Also note that our style guide is changing, so locking in at the wrong style "too early" would only waste resources.)
Tree-SHA512: 9b10e89f2aeaf0c8a9ae248aa891d74e0abf0569f8e5dfd266446efa8bfaf19f0ea0980abf0b0b22f0d8416ee90d7435d21a9f9285b66df43f370b7979173406
