Exception Handling in 100 Popular Python Packages for the last one year Feb 2018- Feb 2019
The package list is obtained from https://hugovk.github.io/top-pypi-packages/
Source code of each of the packages in the list was parsed for exception handling statements and blocks.
Total count of classes in all the exception handlers are accumulated into Total Exception Handlers.
Total number of re-raises statements in the exception handlers are counted into Total Re-raises Statements
Total number of cases where exception handling is done for Exception or BaseException directly is in Total BaseException Handlers
| Number | Package | Lines of Code | Total Exception Handlers | Total Re-raise Statements | Total BaseException Handlers |
|---|---|---|---|---|---|
1 |
pip |
67677 |
727 |
160 (22%) |
49 (6%) |
2 |
urllib3 |
5242 |
121 |
33 (27%) |
5 (4%) |
3 |
botocore |
23774 |
247 |
70 (28%) |
8 (3%) |
4 |
six |
649 |
8 |
2 (25%) |
0 (0%) |
5 |
python-dateutil |
4295 |
55 |
6 (10%) |
3 (5%) |
6 |
s3transfer |
3294 |
34 |
2 (5%) |
12 (35%) |
7 |
pyyaml |
12241 |
26 |
9 (34%) |
1 (3%) |
8 |
docutils |
28442 |
178 |
39 (21%) |
2 (1%) |
9 |
pyasn1 |
5091 |
20 |
3 (15%) |
0 (0%) |
10 |
jmespath |
1316 |
14 |
2 (14%) |
0 (0%) |
11 |
requests |
2558 |
77 |
23 (29%) |
0 (0%) |
12 |
setuptools |
15892 |
229 |
42 (18%) |
26 (11%) |
13 |
awscli |
21402 |
144 |
52 (36%) |
25 (17%) |
14 |
futures |
1379 |
8 |
0 (0%) |
0 (0%) |
15 |
rsa |
1108 |
6 |
6 (100%) |
0 (0%) |
16 |
certifi |
11 |
0 |
0 (0%) |
0 (0%) |
17 |
colorama |
551 |
4 |
0 (0%) |
0 (0%) |
18 |
idna |
10524 |
4 |
2 (50%) |
0 (0%) |
19 |
wheel |
956 |
7 |
3 (42%) |
0 (0%) |
20 |
chardet |
4711 |
0 |
0 (0%) |
0 (0%) |
21 |
simplejson |
3211 |
42 |
8 (19%) |
2 (4%) |
22 |
boto3 |
3291 |
8 |
5 (62%) |
0 (0%) |
23 |
pytz |
1766 |
11 |
1 (9%) |
0 (0%) |
24 |
numpy |
109158 |
662 |
143 (21%) |
119 (17%) |
25 |
awscli-cwlogs |
2152 |
28 |
4 (14%) |
5 (17%) |
26 |
markupsafe |
822 |
10 |
3 (30%) |
0 (0%) |
27 |
cryptography |
41206 |
40 |
19 (47%) |
0 (0%) |
28 |
jinja2 |
7371 |
136 |
19 (13%) |
24 (17%) |
29 |
cffi |
24698 |
0 |
0 (0%) |
0 (0%) |
30 |
enum34 |
499 |
13 |
2 (15%) |
0 (0%) |
31 |
pycparser |
8440 |
52 |
2 (3%) |
5 (9%) |
32 |
ipaddress |
1191 |
36 |
6 (16%) |
0 (0%) |
33 |
protobuf |
43609 |
103 |
22 (21%) |
1 (0%) |
34 |
asn1crypto |
8861 |
43 |
19 (44%) |
0 (0%) |
35 |
click |
4255 |
95 |
8 (8%) |
26 (27%) |
36 |
pytest |
13560 |
190 |
19 (10%) |
31 (16%) |
37 |
future |
41038 |
78 |
3 (3%) |
8 (10%) |
38 |
pbr |
3922 |
42 |
4 (9%) |
10 (23%) |
39 |
attrs |
1690 |
8 |
0 (0%) |
1 (12%) |
40 |
decorator |
308 |
6 |
0 (0%) |
1 (16%) |
41 |
pyparsing |
3209 |
50 |
10 (20%) |
9 (18%) |
42 |
pandas |
233053 |
1119 |
182 (16%) |
150 (13%) |
43 |
werkzeug |
11418 |
222 |
19 (8%) |
22 (9%) |
44 |
pyasn1-modules |
6836 |
0 |
0 (0%) |
0 (0%) |
45 |
virtualenv |
1615 |
19 |
1 (5%) |
3 (15%) |
46 |
flask |
3230 |
42 |
10 (23%) |
5 (11%) |
47 |
psutil |
16533 |
288 |
54 (18%) |
10 (3%) |
48 |
boto |
51796 |
163 |
32 (19%) |
11 (6%) |
49 |
itsdangerous |
620 |
21 |
9 (42%) |
7 (33%) |
50 |
py |
5819 |
111 |
28 (25%) |
16 (14%) |
51 |
google-api-core |
1905 |
21 |
13 (61%) |
5 (23%) |
52 |
argparse |
1495 |
16 |
5 (31%) |
0 (0%) |
53 |
mock |
5643 |
38 |
1 (2%) |
1 (2%) |
54 |
pyopenssl |
2730 |
17 |
1 (5%) |
8 (47%) |
55 |
pluggy |
672 |
18 |
3 (16%) |
4 (22%) |
56 |
coverage |
13985 |
0 |
0 (0%) |
0 (0%) |
57 |
scipy |
159043 |
29 |
4 (13%) |
10 (34%) |
58 |
grpcio |
15138 |
2 |
0 (0%) |
0 (0%) |
59 |
google-cloud-core |
572 |
5 |
0 (0%) |
0 (0%) |
60 |
jsonschema |
2612 |
23 |
4 (17%) |
2 (8%) |
61 |
psycopg2 |
11299 |
13 |
0 (0%) |
0 (0%) |
62 |
pygments |
65147 |
88 |
16 (18%) |
7 (7%) |
63 |
scikit-learn |
114720 |
449 |
110 (24%) |
54 (12%) |
64 |
docopt |
505 |
2 |
0 (0%) |
0 (0%) |
65 |
funcsigs |
511 |
14 |
3 (21%) |
0 (0%) |
66 |
pillow |
30148 |
385 |
68 (17%) |
36 (9%) |
67 |
httplib2 |
7305 |
91 |
9 (9%) |
7 (7%) |
68 |
more-itertools |
2835 |
25 |
3 (12%) |
1 (4%) |
69 |
cachetools |
570 |
24 |
4 (16%) |
0 (0%) |
70 |
websocket-client |
2151 |
28 |
6 (21%) |
6 (21%) |
71 |
lxml |
24077 |
85 |
6 (7%) |
5 (5%) |
72 |
google-auth |
1873 |
38 |
1 (2%) |
0 (0%) |
73 |
oauth2client |
3451 |
57 |
7 (12%) |
2 (3%) |
74 |
google-api-python-client |
2202 |
36 |
4 (11%) |
8 (22%) |
75 |
paramiko |
10079 |
88 |
15 (17%) |
14 (15%) |
76 |
ptyprocess |
534 |
28 |
8 (28%) |
2 (7%) |
77 |
tornado |
26982 |
320 |
15 (4%) |
70 (21%) |
78 |
mccabe |
262 |
5 |
0 (0%) |
0 (0%) |
79 |
pexpect |
2055 |
22 |
3 (13%) |
1 (4%) |
80 |
sqlalchemy |
237601 |
364 |
58 (15%) |
63 (17%) |
81 |
pyjwt |
985 |
35 |
15 (42%) |
1 (2%) |
82 |
uritemplate |
290 |
1 |
0 (0%) |
0 (0%) |
83 |
matplotlib |
117843 |
521 |
114 (21%) |
36 (6%) |
84 |
wrapt |
914 |
12 |
2 (16%) |
0 (0%) |
85 |
bcrypt |
655 |
0 |
0 (0%) |
0 (0%) |
86 |
markdown |
3769 |
37 |
4 (10%) |
3 (8%) |
87 |
google-resumable-media |
692 |
1 |
0 (0%) |
0 (0%) |
88 |
elasticsearch |
3802 |
67 |
24 (35%) |
4 (5%) |
89 |
pymysql |
2977 |
22 |
1 (4%) |
4 (18%) |
90 |
oauthlib |
3818 |
47 |
2 (4%) |
3 (6%) |
91 |
pymemcache |
3001 |
36 |
6 (16%) |
20 (55%) |
92 |
pycodestyle |
1647 |
16 |
0 (0%) |
0 (0%) |
93 |
docker-pycreds |
129 |
1 |
0 (0%) |
0 (0%) |
94 |
docker |
6009 |
39 |
78 (200%) |
2 (5%) |
95 |
google-cloud-bigquery |
4429 |
9 |
21 (233%) |
1 (11%) |
96 |
ipython |
33207 |
40 |
4 (10%) |
5 (12%) |
97 |
pynacl |
5156 |
3 |
0 (0%) |
0 (0%) |
98 |
prompt-toolkit |
18879 |
105 |
5 (4%) |
12 (11%) |
99 |
multidict |
2187 |
18 |
7 (38%) |
2 (11%) |
100 |
absl-py |
4670 |
63 |
6 (9%) |
3 (4%) |