Remove support for python 2.7

It's long since not supported, so it's time. Remove the python2.7 bits, and add
python 3.10 to the azure config.

Also cleaned up some pylint-related bits that were just in place for 2.7 support.

ci/azure/azure-pipelines.yaml

@@ -9,14 +9,15 @@ jobs:
       vmImage: ubuntu-20.04
     strategy:
       matrix:
-        Python27:
-          python.version: '2.7'
         Python37:
           python.version: '3.7'
         Python38:
           python.version: '3.8'
         Python39:
           python.version: '3.9'
+        # Not yet supported on azure
+        # Python310:
+        #   python.version: '3.10'
     steps:
       - template: steps.yaml
 
@@ -25,8 +26,6 @@ jobs:
       vmImage: 'macOS-10.15'
     strategy:
       matrix:
-        Python37:
-          python.version: '3.7'
         Python39:
           python.version: '3.9'
     steps:

jobrunner/db/__init__.py

@@ -30,7 +30,6 @@
     pidDebug,
     safeSleep,
     sprint,
-    stackDetails,
     utcNow,
 )
 
@@ -246,27 +245,14 @@ def __init__(self, config, plugins):
     def setDbCaching(self, enabled):
         pass
 
-    def debugPrint(self, msg):
-        if "lock" not in self.config.debugLevel:
-            return
-        fnDetails = stackDetails(depth=2)
-        if fnDetails.funcname == 'lock' or fnDetails.funcname == 'unlock':
-            fnDetails = stackDetails(depth=3)
-        if fnDetails.funcname == '_locked':
-            fnDetails = stackDetails(depth=4)
-        pidDebug(msg, "from",
-                 fnDetails.filename, fnDetails.funcname, fnDetails.lineno)
-
     def isLocked(self):
         raise NotImplementedError
 
     def lock(self):
         LOGLOCK.debug("lock DB")
-        self.debugPrint("< LOCK DB")
 
     def unlock(self):
         LOGLOCK.debug("unlock DB")
-        self.debugPrint("< UNLOCK DB")
 
     def prune(self, exceptNum=None):
         allJobs = []
@@ -486,8 +472,8 @@ def getJobMatch(self, key, thisWs, skipReminders=False):
                     self.inactive, None, filterWs=thisWs)
             try:
                 return jobList[-1]
-            except IndexError:
-                raise NoMatchingJobError("Job database is empty")
+            except IndexError as err:
+                raise NoMatchingJobError("Job database is empty") from err
         elif key in self.active.db:
             # Exact match, try active first
             return self.active[key]

jobrunner/info.py

@@ -208,7 +208,7 @@ def __eq__(self, other):
     def __lt__(self, other):
         return self.__cmp__(other) < 0
 
-    def __cmp__(self, other):  # pylint: disable=cmp-method
+    def __cmp__(self, other):
         if not isinstance(other, type(self)):
             return -1
         if self._stop is None:

jobrunner/main.py

@@ -5,6 +5,7 @@
 import errno
 import hashlib
 import os
+from os.path import expanduser
 from subprocess import PIPE, CalledProcessError, Popen, check_call, check_output
 import sys
 import tempfile
@@ -210,6 +211,7 @@ def impl_main(args=None):
 
     if options.mail:
         # Collect output files as attachments from dep jobs
+        # pylint: disable=consider-using-with
         tmp = tempfile.NamedTemporaryFile(prefix='jobInfo-')
         options.input = tmp.name
         mailSize = 0
@@ -267,30 +269,30 @@ def waitForDep(depWait, options, jobs):
 
 def monitorForkedJob(job, jobs):
     monitorCmd = ["tail", "-n+0", "-f", job.logfile]
-    monitor = Popen(monitorCmd, stdout=sys.stdout, stderr=sys.stdout)
-    try:
-        active = True
-        rc = 0
-        while active:
-            LOG.debug("monitoring, sleep 0.5")
-            with lockedSection(jobs):
-                active = job.key in jobs.active.db
-                rc = None
-                if not active:
-                    rc = jobs.inactive[job.key].rc
-            time.sleep(0.5)
-            LOG.debug('active %s, rc %r', active, rc)
-        return rc
-    except KeyboardInterrupt:
-        LOG.debug('KeyboardInterrupt')
-        sprint("\n(Stop monitoring): {}".format(job))
-    except BaseException:
-        LOG.info('exception', exc_info=1)
-        raise
-    finally:
-        LOG.debug('terminate monitor subprocess')
-        monitor.terminate()
-        monitor.kill()
+    with Popen(monitorCmd, stdout=sys.stdout, stderr=sys.stdout) as monitor:
+        try:
+            active = True
+            rc = 0
+            while active:
+                LOG.debug("monitoring, sleep 0.5")
+                with lockedSection(jobs):
+                    active = job.key in jobs.active.db
+                    rc = None
+                    if not active:
+                        rc = jobs.inactive[job.key].rc
+                time.sleep(0.5)
+                LOG.debug('active %s, rc %r', active, rc)
+            return rc
+        except KeyboardInterrupt:
+            LOG.debug('KeyboardInterrupt')
+            sprint("\n(Stop monitoring): {}".format(job))
+        except BaseException:
+            LOG.info('exception', exc_info=1)
+            raise
+        finally:
+            LOG.debug('terminate monitor subprocess')
+            monitor.terminate()
+            monitor.kill()
         monitor.wait()
     return 0
 
@@ -366,11 +368,11 @@ def addNonExecOptions(op):
     op.add_argument("--dot", action='store_true',
                     help='Show dependency graph for active jobs')
     op.add_argument("--png", action='store_true',
-                    help='Create dependency graph svg for active jobs in '
-                    '~%s/output/job.svg' % os.getenv('USER'))
+                    help='Create dependency graph svg for active jobs in ' +
+                    expanduser('~/output/job.svg'))
     op.add_argument("--svg", action='store_true',
-                    help='Create dependency graph png for active jobs in '
-                    '~%s/output/job.svg' % os.getenv('USER'))
+                    help='Create dependency graph png for active jobs in ' +
+                    expanduser('~/output/job.svg'))
     op.add_argument("-L", "--list-inactive", action="store_true",
                     help="List inactive jobs")
     op.add_argument("-W", "--watch", action="store_true",
@@ -456,11 +458,11 @@ def handleNonExecOptions(options, jobs):
         if options.dot:
             sprint(dot)
         else:
-            fName = '~%s/output/job.svg' % os.getenv('USER')
+            fName = expanduser('~/output/job.svg')
             ofile = os.path.expanduser(fName)
             cmd = ['dot', '-Tsvg', '-o', ofile]
-            proc = Popen(cmd, stdout=PIPE, stderr=PIPE, stdin=PIPE)
-            stdout, stderr = proc.communicate(input=dot.encode('utf-8'))
+            with Popen(cmd, stdout=PIPE, stderr=PIPE, stdin=PIPE) as proc:
+                stdout, stderr = proc.communicate(input=dot.encode('utf-8'))
             if stdout.strip() or stderr.strip():
                 raise ExitCode(stdout + stderr)
             sprint('Saved output to', fName)
@@ -576,10 +578,10 @@ def handleNonExecWriteOptions(options, jobs):
     elif options.watch:
         try:
             jobs.watchActivity()
-        except KeyboardInterrupt:
+        except KeyboardInterrupt as err:
             sprint("")
             sprint("Exit on user interrupt")
-            raise ExitCode(1)
+            raise ExitCode(1) from err
         return True
     else:
         return False

jobrunner/utils.py

@@ -5,7 +5,6 @@
 import datetime
 import errno
 import fcntl
-import inspect
 import logging
 import os
 import signal
@@ -175,16 +174,11 @@ def pidDebug(*args):
 FnDetails = collections.namedtuple('FnDetails', 'filename, lineno, funcname')
 
 
-def stackDetails(depth=0):
-    caller = inspect.stack()[depth + 1]
-    return FnDetails(caller[1], caller[2], caller[3])
-
-
 def workspaceIdentity():
     return MOD_STATE.plugins.workspaceIdentity()
 
 
-def getAllowed():
+def _getAllowed():
     allowed = (list(range(ord('a'), ord('z') + 1)) +
                list(range(ord('A'), ord('Z') + 1)) +
                list(range(ord('0'), ord('9') + 1)) +
@@ -194,7 +188,7 @@ def getAllowed():
 
 
 def keyEscape(inp):
-    allowed = getAllowed()
+    allowed = _getAllowed()
     ret = ""
     for char in inp:
         if char in allowed:

pylintrc

@@ -60,9 +60,8 @@ disable=invalid-name,
 
         useless-object-inheritance,
         super-with-arguments,
-        consider-using-with,  # because python2 pylint version
-        raise-missing-from,  # because python2 pylint version
         redundant-u-string-prefix,
+        consider-using-f-string,
 
 
 # Enable the message, report, category or checker with the given id(s). You can

test-docker.py

@@ -15,9 +15,9 @@
 VerInfo = namedtuple("VerInfo", ("version", "lock", "default"))
 
 VERSIONS = (
-    VerInfo("2.7", "Pipfile-2.7.lock", False),
     VerInfo("3.8", "Pipfile-3.8.lock", False),
     VerInfo("3.9", "Pipfile-3.9.lock", False),
+    VerInfo("3.10", "Pipfile-3.10.lock", False),
     VerInfo("3.7", "Pipfile.lock", True),
 )