1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
|
import json
import urllib
import dateutil.parser
from collections import OrderedDict
from datetime import datetime, timedelta
from dateutil.relativedelta import relativedelta
import numpy as np
import matplotlib.pyplot as plt
from matplotlib.ticker import FuncFormatter
from matplotlib.transforms import blended_transform_factory
cache = '_pr_cache.txt'
# Obtain release dates using, e.g.,
#
# git log v0.4 -n 1 --format='%ai'
#
# The first two releases are commented out.
# This was in the era before PRs.
#
releases = OrderedDict(
[
# ('0.1', u'2009-10-07 13:52:19 +0200'),
# ('0.2', u'2009-11-12 14:48:45 +0200'),
# ('0.3', u'2011-10-10 03:28:47 -0700'),
('0.4', '2011-12-03 14:31:32 -0800'),
('0.5', '2012-02-26 21:00:51 -0800'),
('0.6', '2012-06-24 21:37:05 -0700'),
('0.7', '2012-09-29 18:08:49 -0700'),
('0.8', '2013-03-04 20:46:09 +0100'),
]
)
month_duration = 24
def fetch_PRs(user='scikit-image', repo='scikit-image', state='open'):
params = {'state': state, 'per_page': 100, 'page': 1}
data = []
page_data = True
while page_data:
config = {'user': user, 'repo': repo, 'params': urllib.urlencode(params)}
fetch_status = (
f"Fetching page {params['page']} (state={params['state']})"
f" from {config['user']}/{config['repo']}..."
)
print(fetch_status)
f = urllib.urlopen(
f"https://api.github.com/repos/{config['user']}/{{config['repos']}}/pulls?{config['params']}"
)
params['page'] += 1
page_data = json.loads(f.read())
if 'message' in page_data and page_data['message'] == "Not Found":
page_data = []
print(f"Warning: Repo not found ({config['user']}/{config['repo']})")
else:
data.extend(page_data)
return data
def seconds_from_epoch(dates):
seconds = [(dt - epoch).total_seconds() for dt in dates]
return seconds
def get_month_bins(dates):
now = datetime.now(tz=dates[0].tzinfo)
this_month = datetime(year=now.year, month=now.month, day=1, tzinfo=dates[0].tzinfo)
bins = [
this_month - relativedelta(months=i)
for i in reversed(range(-1, month_duration))
]
return seconds_from_epoch(bins)
def date_formatter(value, _):
dt = epoch + timedelta(seconds=value)
return dt.strftime('%Y/%m')
for r in releases:
releases[r] = dateutil.parser.parse(releases[r])
try:
PRs = json.loads(open(cache).read())
print('Loaded PRs from cache...')
except OSError:
PRs = fetch_PRs(user='stefanv', repo='scikits.image', state='closed')
PRs.extend(fetch_PRs(state='open'))
PRs.extend(fetch_PRs(state='closed'))
cf = open(cache, 'w')
cf.write(json.dumps(PRs))
cf.flush()
nrs = [pr['number'] for pr in PRs]
print(f'Processing {len(nrs)} pull requests...')
dates = [dateutil.parser.parse(pr['created_at']) for pr in PRs]
epoch = datetime(2009, 1, 1, tzinfo=dates[0].tzinfo)
dates_f = seconds_from_epoch(dates)
bins = get_month_bins(dates)
fig, ax = plt.subplots(figsize=(7, 5))
n, bins, _ = ax.hist(dates_f, bins=bins, color='blue', alpha=0.6)
ax.xaxis.set_major_formatter(FuncFormatter(date_formatter))
ax.set_xticks(bins[2:-1:3]) # Date label every 3 months.
labels = ax.get_xticklabels()
for l in labels:
l.set_rotation(40)
l.set_size(10)
mixed_transform = blended_transform_factory(ax.transData, ax.transAxes)
for version, date in releases.items():
date = seconds_from_epoch([date])[0]
ax.axvline(date, color='black', linestyle=':', label=version)
ax.text(
date, 1, version, color='r', va='bottom', ha='center', transform=mixed_transform
)
ax.set_title('Pull request activity').set_y(1.05)
ax.set_xlabel('Date')
ax.set_ylabel('PRs per month', color='blue')
cumulative = np.cumsum(n)
cumulative += len(dates) - cumulative[-1]
ax2 = ax.twinx()
ax2.plot(bins[1:], cumulative, color='black', linewidth=2)
ax2.set_ylabel('Total PRs', color='black')
plt.tight_layout()
fig.savefig('PRs.png')
plt.show()
|
