Added code to retrieve student contributions to codebase

grade_team_contribution.py

 import textwrap
-from typing import List
+from math import ceil, log10
+from typing import Tuple
 
 from api.canvas_classes import *
 from api.gitlab_classes import *
@@ -36,9 +37,26 @@ def get_project_prefix(canvas_groups):
     return prefix
 
 
-def display_git_contributions(project):
-    print('Review git contributions offline')
-# TODO: recognize that this only works for projects in namespace; will need to ask whether project should be retrieved.
+def display_git_contributions(project: GitlabProject):
+    # TODO: recognize that this only works for projects in namespace; will need to ask whether to retrieve project.
+    commits: List[GitlabCommit] = project.get_commits()     # TODO: narrow the selection
+    contributions: Dict[str, int] = {}
+    contributors: Set[Tuple[str, str]] = set()
+    # noinspection PyShadowingNames
+    for commit in commits:
+        if not commit.is_merge():
+            author = commit.get_author()
+            contributors.add((author['name'], author['email']))
+            email = author['email']                         # TODO: manage aliases
+            size = commit.get_diff_size()                   # TODO: distinguish between file types
+            if email != 'bohn@unl.edu':                     # TODO: un-hard-code this
+                if email not in contributions:
+                    contributions[email] = 0
+                contributions[email] += size
+    print(f'Total line changes by each contributor to {project} :')
+    for contribution in contributions:
+        contributor = list(filter(lambda c: c[1] == contribution, contributors))[0]
+        print(f'\t{str(contributions[contribution]).rjust(5)}\t{contributor}')
 
 
 def grade(assignment1, assignment2, students):
@@ -68,11 +86,13 @@ if __name__ == '__main__':
     if option is options[1]:
         print('Which group?')
         student_groups = [select_from_list(student_groups, 'student group')]
+    zero_padding: int = ceil(log10(len(projects)))
     for student_group in student_groups:                        # TODO: Skip past graded groups
         input(f'\n\nPress Enter to grade {student_group}')
+        project_name = f'{project_prefix}{student_group.get_name().split()[1]}'.zfill(zero_padding)
+        display_git_contributions(list(filter(lambda p: p.get_name() == project_name, projects))[0])
+        print()
         display_peer_reviews(peer_review_assignment, student_group.get_students())
-        project_name = f'{project_prefix}{student_group.get_name().split()[1]}'
-#        display_git_contributions(list(filter(lambda p: p.get_name() == project_name, projects))[0])
         # TODO: Ask if you want to grade (keep track of groups that you don't grade)
         if True:
             grade(peer_review_assignment, None, student_group.get_students())