Reporting functions can supply a list of morfs if it is omitted.

1 files changed, 3 insertions, 3 deletions

diff --git a/coverage/control.py b/coverage/control.py
index 55070535..54b2f33c 100644
--- a/coverage/control.py
+++ b/coverage/control.py
@@ -168,7 +168,7 @@ class coverage:
             statements, excluded, missing, format_lines(statements, missing)
             )
 
-    def report(self, morfs, show_missing=True, ignore_errors=False, file=None,
+    def report(self, morfs=None, show_missing=True, ignore_errors=False, file=None,
                 omit_prefixes=None
                 ):
         """Write a summary report to `file`.
@@ -180,7 +180,7 @@ class coverage:
         reporter = SummaryReporter(self, show_missing, ignore_errors)
         reporter.report(morfs, outfile=file, omit_prefixes=omit_prefixes)
 
-    def annotate(self, morfs, directory=None, ignore_errors=False,
+    def annotate(self, morfs=None, directory=None, ignore_errors=False,
                 omit_prefixes=None
                 ):
         """Annotate a list of modules.
@@ -194,7 +194,7 @@ class coverage:
         reporter = AnnotateReporter(self, ignore_errors)
         reporter.report(morfs, directory=directory, omit_prefixes=omit_prefixes)
 
-    def html_report(self, morfs, directory=None, ignore_errors=False,
+    def html_report(self, morfs=None, directory=None, ignore_errors=False,
                 omit_prefixes=None
                 ):
         """Generate an HTML report.