Merge #12295: Enable flake8 warnings for all currently non-violated rules

a9d0ebc262 Enable flake8 warnings for all currently non-violated rules (practicalswift)
4cbab15e75 tests: Fix accidental redefinition of previously defined variable via list comprehension (practicalswift)
0b9207efbe Enable flake8 warning for "list comprehension redefines 'foo' from line N" (F812) (practicalswift)

Pull request description:

  * Enable `flake8` warnings for all currently non-violated rules
  * Fix accidental redefinition via list comprehension

Tree-SHA512: 738b87789e99d02abb2c6b8ff58f65c0cbfeb93e3bf320763e033e510ebd0a4f72861bc8faaf42c14a056a5d4659c33dc70a63730a32cc15159559427bf21193

contrib/devtools/lint-python.sh

@@ -6,5 +6,58 @@
 #
 # Check for specified flake8 warnings in python files.
 
-# F401: module imported but unused
+# E112 expected an indented block
-flake8 --ignore=B,C,E,F,I,N,W --select=F401 .
+# E113 unexpected indentation
+# E115 expected an indented block (comment)
+# E116 unexpected indentation (comment)
+# E125 continuation line with same indent as next logical line
+# E131 continuation line unaligned for hanging indent
+# E133 closing bracket is missing indentation
+# E223 tab before operator
+# E224 tab after operator
+# E271 multiple spaces after keyword
+# E272 multiple spaces before keyword
+# E273 tab after keyword
+# E274 tab before keyword
+# E275 missing whitespace after keyword
+# E304 blank lines found after function decorator
+# E306 expected 1 blank line before a nested definition
+# E502 the backslash is redundant between brackets
+# E702 multiple statements on one line (semicolon)
+# E703 statement ends with a semicolon
+# E714 test for object identity should be "is not"
+# E721 do not compare types, use "isinstance()"
+# E741 do not use variables named "l", "O", or "I"
+# E742 do not define classes named "l", "O", or "I"
+# E743 do not define functions named "l", "O", or "I"
+# F401 module imported but unused
+# F402 import module from line N shadowed by loop variable
+# F404 future import(s) name after other statements
+# F406 "from module import *" only allowed at module level
+# F407 an undefined __future__ feature name was imported
+# F601 dictionary key name repeated with different values
+# F602 dictionary key variable name repeated with different values
+# F621 too many expressions in an assignment with star-unpacking
+# F622 two or more starred expressions in an assignment (a, *b, *c = d)
+# F631 assertion test is a tuple, which are always True
+# F701 a break statement outside of a while or for loop
+# F702 a continue statement outside of a while or for loop
+# F703 a continue statement in a finally block in a loop
+# F704 a yield or yield from statement outside of a function
+# F705 a return statement with arguments inside a generator
+# F706 a return statement outside of a function/method
+# F707 an except: block as not the last exception handler
+# F811 redefinition of unused name from line N
+# F812 list comprehension redefines 'foo' from line N
+# F822 undefined name name in __all__
+# F823 local variable name … referenced before assignment
+# F831 duplicate argument name in function definition
+# W292 no newline at end of file
+# W504 line break after binary operator
+# W601 .has_key() is deprecated, use "in"
+# W602 deprecated form of raising exception
+# W603 "<>" is deprecated, use "!="
+# W604 backticks are deprecated, use "repr()"
+# W605 invalid escape sequence "x"
+
+flake8 --ignore=B,C,E,F,I,N,W --select=E112,E113,E115,E116,E125,E131,E133,E223,E224,E271,E272,E273,E274,E275,E304,E306,E502,E702,E703,E714,E721,E741,E742,E743,F401,F402,F404,F406,F407,F601,F602,F621,F622,F631,F701,F702,F703,F704,F705,F706,F707,F811,F812,F822,F823,F831,W292,W504,W601,W602,W603,W604,W605 .

test/functional/rpc_fundrawtransaction.py

@@ -223,8 +223,8 @@ class RawTransactionsTest(BitcoinTestFramework):
         assert_raises_rpc_error(-1, "JSON value is not a string as expected", self.nodes[2].fundrawtransaction, rawtx, {'change_type': None})
         assert_raises_rpc_error(-5, "Unknown change type", self.nodes[2].fundrawtransaction, rawtx, {'change_type': ''})
         rawtx = self.nodes[2].fundrawtransaction(rawtx, {'change_type': 'bech32'})
-        tx  = self.nodes[2].decoderawtransaction(rawtx['hex'])
+        dec_tx = self.nodes[2].decoderawtransaction(rawtx['hex'])
-        assert_equal('witness_v0_keyhash', tx['vout'][rawtx['changepos']]['scriptPubKey']['type'])
+        assert_equal('witness_v0_keyhash', dec_tx['vout'][rawtx['changepos']]['scriptPubKey']['type'])
 
         #########################################################################
         # test a fundrawtransaction with a VIN smaller than the required amount #
@@ -676,7 +676,7 @@ class RawTransactionsTest(BitcoinTestFramework):
                   self.nodes[3].fundrawtransaction(rawtx, {"feeRate": 2*min_relay_tx_fee}),
                   self.nodes[3].fundrawtransaction(rawtx, {"feeRate": 2*min_relay_tx_fee, "subtractFeeFromOutputs": [0]})]
 
-        dec_tx = [self.nodes[3].decoderawtransaction(tx['hex']) for tx in result]
+        dec_tx = [self.nodes[3].decoderawtransaction(tx_['hex']) for tx_ in result]
         output = [d['vout'][1 - r['changepos']]['value'] for d, r in zip(dec_tx, result)]
         change = [d['vout'][r['changepos']]['value'] for d, r in zip(dec_tx, result)]