Upgrade to coverage 3.7.1 and have it auto-build itself on first use.

third_party/coverage-3.6/coverage/report.py

-"""Reporter foundation for Coverage."""
-
-import fnmatch, os
-from coverage.codeunit import code_unit_factory
-from coverage.files import prep_patterns
-from coverage.misc import CoverageException, NoSource, NotPython
-
-class Reporter(object):
-    """A base class for all reporters."""
-
-    def __init__(self, coverage, config):
-        """Create a reporter.
-
-        `coverage` is the coverage instance. `config` is an instance  of
-        CoverageConfig, for controlling all sorts of behavior.
-
-        """
-        self.coverage = coverage
-        self.config = config
-
-        # The code units to report on.  Set by find_code_units.
-        self.code_units = []
-
-        # The directory into which to place the report, used by some derived
-        # classes.
-        self.directory = None
-
-    def find_code_units(self, morfs):
-        """Find the code units we'll report on.
-
-        `morfs` is a list of modules or filenames.
-
-        """
-        morfs = morfs or self.coverage.data.measured_files()
-        file_locator = self.coverage.file_locator
-        self.code_units = code_unit_factory(morfs, file_locator)
-
-        if self.config.include:
-            patterns = prep_patterns(self.config.include)
-            filtered = []
-            for cu in self.code_units:
-                for pattern in patterns:
-                    if fnmatch.fnmatch(cu.filename, pattern):
-                        filtered.append(cu)
-                        break
-            self.code_units = filtered
-
-        if self.config.omit:
-            patterns = prep_patterns(self.config.omit)
-            filtered = []
-            for cu in self.code_units:
-                for pattern in patterns:
-                    if fnmatch.fnmatch(cu.filename, pattern):
-                        break
-                else:
-                    filtered.append(cu)
-            self.code_units = filtered
-
-        self.code_units.sort()
-
-    def report_files(self, report_fn, morfs, directory=None):
-        """Run a reporting function on a number of morfs.
-
-        `report_fn` is called for each relative morf in `morfs`.  It is called
-        as::
-
-            report_fn(code_unit, analysis)
-
-        where `code_unit` is the `CodeUnit` for the morf, and `analysis` is
-        the `Analysis` for the morf.
-
-        """
-        self.find_code_units(morfs)
-
-        if not self.code_units:
-            raise CoverageException("No data to report.")
-
-        self.directory = directory
-        if self.directory and not os.path.exists(self.directory):
-            os.makedirs(self.directory)
-
-        for cu in self.code_units:
-            try:
-                report_fn(cu, self.coverage._analyze(cu))
-            except NoSource:
-                if not self.config.ignore_errors:
-                    raise
-            except NotPython:
-                # Only report errors for .py files, and only if we didn't
-                # explicitly suppress those errors.
-                if cu.should_be_python() and not self.config.ignore_errors:
-                    raise