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Sampling profile

Collected 952 samples.

Category % Samples
Ours 68.2% 649
Garbage collector 30.5% 290
Standard library 1.4% 13

Hottest functions

Self samples

Functions ranked by samples taken directly in the function body, excluding callees.

% Samples Function Location
30.5% 290 (garbage collector) <unknown>
16.7% 159 Parser._addtoken parse.py
9.6% 91 get_features_used __init__.py
5.4% 51 Driver.parse_tokens driver.py
4.1% 39 parse ast.py
2.7% 26 generate_tokens tokenize.py
2.6% 25 Visitor.visit nodes.py
1.8% 17 Parser.pop parse.py
1.8% 17 _stringify_ast parsing.py
1.6% 15 normalize_invisible_parens linegen.py
1.2% 11 Parser.addtoken parse.py
1.2% 11 convert_one_fmt_off_pair comments.py
1.1% 10 assert_equivalent __init__.py
1.1% 10 convert pytree.py
1.1% 10 Line.append lines.py
0.9% 9 Visitor.visit_default nodes.py
0.8% 8 LineGenerator.visit_default linegen.py
0.8% 8 _compile_bytecode <frozen importlib._bootstrap_external>
0.7% 7 Parser.shift parse.py
0.7% 7 hug_power_op trans.py

Categories

Ours
% Samples Function Location
16.7% 159 Parser._addtoken parse.py
9.6% 91 get_features_used __init__.py
5.4% 51 Driver.parse_tokens driver.py
4.1% 39 parse ast.py
2.7% 26 generate_tokens tokenize.py
2.6% 25 Visitor.visit nodes.py
1.8% 17 Parser.pop parse.py
1.8% 17 _stringify_ast parsing.py
1.6% 15 normalize_invisible_parens linegen.py
1.2% 11 Parser.addtoken parse.py
1.2% 11 convert_one_fmt_off_pair comments.py
1.1% 10 assert_equivalent __init__.py
1.1% 10 convert pytree.py
1.1% 10 Line.append lines.py
0.9% 9 Visitor.visit_default nodes.py
0.8% 8 LineGenerator.visit_default linegen.py
0.7% 7 Parser.shift parse.py
0.7% 7 hug_power_op trans.py
0.6% 6 EmptyLineTracker.maybe_empty_lines lines.py
0.6% 6 line_to_string lines.py
Garbage collector
% Samples Function Location
30.5% 290 (garbage collector) <unknown>
Standard library
% Samples Function Location
0.8% 8 _compile_bytecode <frozen importlib._bootstrap_external>
0.2% 2 FileLoader.get_data <frozen importlib._bootstrap_external>
0.2% 2 _call_with_frames_removed <frozen importlib._bootstrap>
0.1% 1 ABCMeta.__new__ <frozen abc>

Lines

Lines ranked by contribution to each function's self samples.

Parser._addtoken (parse.py)
% Samples Location
16.4% 26 parse.py:328
15.1% 24 parse.py:311
13.8% 22 parse.py:305
10.7% 17 parse.py:298
6.9% 11 parse.py:315
get_features_used (__init__.py)
% Samples Location
24.2% 22 __init__.py:1335
19.8% 18 __init__.py:1440
11.0% 10 __init__.py:1424
9.9% 9 __init__.py:1436
6.6% 6 __init__.py:1430
Driver.parse_tokens (driver.py)
% Samples Location
54.9% 28 driver.py:162
21.6% 11 driver.py:128
3.9% 2 driver.py:172
3.9% 2 driver.py:161
2.0% 1 driver.py:140
parse (ast.py)
% Samples Location
100.0% 39 ast.py:46
generate_tokens (tokenize.py)
% Samples Location
34.6% 9 tokenize.py:624
30.8% 8 tokenize.py:875
7.7% 2 tokenize.py:704
7.7% 2 tokenize.py:634
3.8% 1 tokenize.py:879
Visitor.visit (nodes.py)
% Samples Location
68.0% 17 nodes.py:185
20.0% 5 nodes.py:183
8.0% 2 nodes.py:163
4.0% 1 nodes.py:181
Parser.pop (parse.py)
% Samples Location
41.2% 7 parse.py:404
17.6% 3 parse.py:406
17.6% 3 parse.py:408
11.8% 2 parse.py:403
11.8% 2 parse.py:398
_stringify_ast (parsing.py)
% Samples Location
35.3% 6 parsing.py:214
23.5% 4 parsing.py:217
17.6% 3 parsing.py:197
11.8% 2 parsing.py:240
5.9% 1 parsing.py:189
normalize_invisible_parens (linegen.py)
% Samples Location
46.7% 7 linegen.py:1432
20.0% 3 linegen.py:1339
6.7% 1 linegen.py:1351
6.7% 1 linegen.py:1431
6.7% 1 linegen.py:1436
Parser.addtoken (parse.py)
% Samples Location
90.9% 10 parse.py:252
9.1% 1 parse.py:245
convert_one_fmt_off_pair (comments.py)
% Samples Location
72.7% 8 comments.py:184
27.3% 3 comments.py:186
assert_equivalent (__init__.py)
% Samples Location
60.0% 6 __init__.py:1547
40.0% 4 __init__.py:1546
convert (pytree.py)
% Samples Location
40.0% 4 pytree.py:501
30.0% 3 pytree.py:503
20.0% 2 pytree.py:486
10.0% 1 pytree.py:499
Line.append (lines.py)
% Samples Location
40.0% 4 lines.py:89
30.0% 3 lines.py:95
10.0% 1 lines.py:79
10.0% 1 lines.py:91
10.0% 1 lines.py:97
Visitor.visit_default (nodes.py)
% Samples Location
55.6% 5 nodes.py:191
44.4% 4 nodes.py:187
LineGenerator.visit_default (linegen.py)
% Samples Location
50.0% 4 linegen.py:157
50.0% 4 linegen.py:158
_compile_bytecode (<frozen importlib._bootstrap_external>)
% Samples Location
87.5% 7 <frozen importlib._bootstrap_external>:500
12.5% 1 <frozen importlib._bootstrap_external>:505
Parser.shift (parse.py)
% Samples Location
57.1% 4 parse.py:381
42.9% 3 parse.py:383
hug_power_op (trans.py)
% Samples Location
42.9% 3 trans.py:151
42.9% 3 trans.py:133
14.3% 1 trans.py:85
EmptyLineTracker.maybe_empty_lines (lines.py)
% Samples Location
50.0% 3 lines.py:571
33.3% 2 lines.py:584
16.7% 1 lines.py:604
line_to_string (lines.py)
% Samples Location
100.0% 6 lines.py:1078
FileLoader.get_data (<frozen importlib._bootstrap_external>)
% Samples Location
100.0% 2 <frozen importlib._bootstrap_external>:923
_call_with_frames_removed (<frozen importlib._bootstrap>)
% Samples Location
100.0% 2 <frozen importlib._bootstrap>:549
ABCMeta.__new__ (<frozen abc>)
% Samples Location
100.0% 1 <frozen abc>:106

Callers

Callers ranked by contribution to each function's self samples. Inlining can make caller attribution imprecise.

(garbage collector) (<unknown>)
% Samples Caller Location
63.4% 184 Driver.parse_tokens driver.py
12.4% 36 is_vararg nodes.py
5.2% 15 Parser._addtoken parse.py
2.4% 7 Visitor.visit nodes.py
2.1% 6 StringTransformer.__init__ trans.py
Parser._addtoken (parse.py)
% Samples Caller Location
97.5% 155 Parser.addtoken parse.py
1.3% 2 (native) <unknown>
1.3% 2 TokenProxy.__next__ driver.py
get_features_used (__init__.py)
% Samples Caller Location
100.0% 91 detect_target_versions __init__.py
Driver.parse_tokens (driver.py)
% Samples Caller Location
100.0% 51 Driver.parse_string driver.py
parse (ast.py)
% Samples Caller Location
100.0% 39 _parse_single_version parsing.py
generate_tokens (tokenize.py)
% Samples Caller Location
100.0% 26 (native) <unknown>
Visitor.visit (nodes.py)
% Samples Caller Location
60.0% 15 Visitor.visit_default nodes.py
36.0% 9 LineGenerator.visit_stmt linegen.py
4.0% 1 LineGenerator.visit_funcdef linegen.py
Parser.pop (parse.py)
% Samples Caller Location
100.0% 17 Parser._addtoken parse.py
_stringify_ast (parsing.py)
% Samples Caller Location
100.0% 17 _stringify_ast_with_new_parent parsing.py
normalize_invisible_parens (linegen.py)
% Samples Caller Location
100.0% 15 LineGenerator.visit_stmt linegen.py
Parser.addtoken (parse.py)
% Samples Caller Location
100.0% 11 Driver.parse_tokens driver.py
convert_one_fmt_off_pair (comments.py)
% Samples Caller Location
100.0% 11 normalize_fmt_off comments.py
assert_equivalent (__init__.py)
% Samples Caller Location
100.0% 10 check_stability_and_equivalence __init__.py
convert (pytree.py)
% Samples Caller Location
70.0% 7 Parser.pop parse.py
30.0% 3 Parser.shift parse.py
Line.append (lines.py)
% Samples Caller Location
100.0% 10 LineGenerator.visit_default linegen.py
Visitor.visit_default (nodes.py)
% Samples Caller Location
100.0% 9 LineGenerator.visit_default linegen.py
LineGenerator.visit_default (linegen.py)
% Samples Caller Location
75.0% 6 Visitor.visit nodes.py
12.5% 1 LineGenerator.visit_suite linegen.py
12.5% 1 LineGenerator.visit_simple_stmt linegen.py
_compile_bytecode (<frozen importlib._bootstrap_external>)
% Samples Caller Location
100.0% 8 SourceLoader.get_code <frozen importlib._bootstrap_external>
Parser.shift (parse.py)
% Samples Caller Location
100.0% 7 Parser._addtoken parse.py
hug_power_op (trans.py)
% Samples Caller Location
42.9% 3 run_transformer linegen.py
42.9% 3 (native) <unknown>
14.3% 1 _hugging_power_ops_line_to_string linegen.py
EmptyLineTracker.maybe_empty_lines (lines.py)
% Samples Caller Location
100.0% 6 _format_str_once __init__.py
line_to_string (lines.py)
% Samples Caller Location
100.0% 6 transform_line linegen.py
FileLoader.get_data (<frozen importlib._bootstrap_external>)
% Samples Caller Location
100.0% 2 SourceLoader.get_code <frozen importlib._bootstrap_external>
_call_with_frames_removed (<frozen importlib._bootstrap>)
% Samples Caller Location
50.0% 1 ExtensionFileLoader.create_module <frozen importlib._bootstrap_external>
50.0% 1 ExtensionFileLoader.exec_module <frozen importlib._bootstrap_external>
ABCMeta.__new__ (<frozen abc>)
% Samples Caller Location
100.0% 1 (native) <unknown>

Total samples

Functions ranked by total samples taken in the function and all its callees.

% Samples Function Location
100.0% 952 (native) <unknown>
100.0% 952 _run_code <frozen runpy>
100.0% 952 run_module <frozen runpy>
100.0% 952 _run_module_as_main <frozen runpy>
97.8% 931 reformat_one __init__.py
97.8% 931 main __init__.py
97.8% 931 pass_context.<locals>.new_func decorators.py
97.8% 931 Context.invoke core.py
97.8% 931 Command.invoke core.py
97.8% 931 Command.main core.py
97.8% 931 Command.__call__ core.py
97.8% 931 patched_main __init__.py
97.8% 931 <module> __main__.py
97.8% 931 _run_module_code <frozen runpy>
97.7% 930 format_file_contents __init__.py
97.7% 930 format_file_in_place __init__.py
89.4% 851 _format_str_once __init__.py
52.8% 503 Driver.parse_tokens driver.py
52.8% 503 Driver.parse_string driver.py
52.8% 503 lib2to3_parse parsing.py

Categories

Ours
% Samples Function Location
97.8% 931 reformat_one __init__.py
97.8% 931 main __init__.py
97.8% 931 pass_context.<locals>.new_func decorators.py
97.8% 931 Context.invoke core.py
97.8% 931 Command.invoke core.py
97.8% 931 Command.main core.py
97.8% 931 Command.__call__ core.py
97.8% 931 patched_main __init__.py
97.8% 931 <module> __main__.py
97.7% 930 format_file_contents __init__.py
97.7% 930 format_file_in_place __init__.py
89.4% 851 _format_str_once __init__.py
52.8% 503 Driver.parse_tokens driver.py
52.8% 503 Driver.parse_string driver.py
52.8% 503 lib2to3_parse parsing.py
49.8% 474 format_str __init__.py
47.9% 456 check_stability_and_equivalence __init__.py
40.2% 383 assert_stable __init__.py
25.1% 239 Parser.addtoken parse.py
23.4% 223 Parser._addtoken parse.py
Garbage collector
% Samples Function Location
30.5% 290 (garbage collector) <unknown>
Standard library
% Samples Function Location
100.0% 952 _run_code <frozen runpy>
100.0% 952 run_module <frozen runpy>
100.0% 952 _run_module_as_main <frozen runpy>
97.8% 931 _run_module_code <frozen runpy>
2.2% 21 _LoaderBasics.exec_module <frozen importlib._bootstrap_external>
2.2% 21 _load_unlocked <frozen importlib._bootstrap>
2.2% 21 _find_and_load_unlocked <frozen importlib._bootstrap>
2.2% 21 _find_and_load <frozen importlib._bootstrap>
2.2% 21 _call_with_frames_removed <frozen importlib._bootstrap>
2.2% 21 _get_module_details <frozen runpy>
1.1% 10 SourceLoader.get_code <frozen importlib._bootstrap_external>
0.8% 8 _compile_bytecode <frozen importlib._bootstrap_external>
0.6% 6 _handle_fromlist <frozen importlib._bootstrap>
0.2% 2 FileLoader.get_data <frozen importlib._bootstrap_external>
0.1% 1 ExtensionFileLoader.create_module <frozen importlib._bootstrap_external>
0.1% 1 module_from_spec <frozen importlib._bootstrap>
0.1% 1 ExtensionFileLoader.exec_module <frozen importlib._bootstrap_external>
0.1% 1 ABCMeta.__new__ <frozen abc>

Callees

Callees ranked by contribution to each function's total samples. Inlining can make callee attribution imprecise, and percentages can sum past 100% when callees recurse.

(native) (<unknown>)
% Samples Callee Location
100.0% 952 run_module <frozen runpy>
100.0% 952 _run_module_as_main <frozen runpy>
97.8% 931 Context.invoke core.py
97.8% 931 Command.main core.py
97.8% 931 Command.__call__ core.py
_run_code (<frozen runpy>)
% Samples Callee Location
100.0% 952 (native) <unknown>
run_module (<frozen runpy>)
% Samples Callee Location
97.8% 931 _run_module_code <frozen runpy>
2.2% 21 _get_module_details <frozen runpy>
_run_module_as_main (<frozen runpy>)
% Samples Callee Location
100.0% 952 _run_code <frozen runpy>
reformat_one (__init__.py)
% Samples Callee Location
99.9% 930 format_file_in_place __init__.py
0.1% 1 Cache.write cache.py
main (__init__.py)
% Samples Callee Location
100.0% 931 reformat_one __init__.py
pass_context.<locals>.new_func (decorators.py)
% Samples Callee Location
100.0% 931 main __init__.py
Context.invoke (core.py)
% Samples Callee Location
100.0% 931 pass_context.<locals>.new_func decorators.py
Command.invoke (core.py)
% Samples Callee Location
100.0% 931 (native) <unknown>
Command.main (core.py)
% Samples Callee Location
100.0% 931 Command.invoke core.py
Command.__call__ (core.py)
% Samples Callee Location
100.0% 931 (native) <unknown>
patched_main (__init__.py)
% Samples Callee Location
100.0% 931 (native) <unknown>
<module> (__main__.py)
% Samples Callee Location
100.0% 931 patched_main __init__.py
_run_module_code (<frozen runpy>)
% Samples Callee Location
100.0% 931 _run_code <frozen runpy>
format_file_contents (__init__.py)
% Samples Callee Location
51.0% 474 format_str __init__.py
49.0% 456 check_stability_and_equivalence __init__.py
format_file_in_place (__init__.py)
% Samples Callee Location
100.0% 930 format_file_contents __init__.py
_format_str_once (__init__.py)
% Samples Callee Location
59.1% 503 lib2to3_parse parsing.py
20.0% 170 Visitor.visit nodes.py
10.7% 91 detect_target_versions __init__.py
5.5% 47 transform_line linegen.py
1.8% 15 normalize_fmt_off comments.py
Driver.parse_tokens (driver.py)
% Samples Callee Location
47.5% 239 Parser.addtoken parse.py
36.6% 184 (garbage collector) <unknown>
5.8% 29 (native) <unknown>
Driver.parse_string (driver.py)
% Samples Callee Location
100.0% 503 Driver.parse_tokens driver.py
lib2to3_parse (parsing.py)
% Samples Callee Location
100.0% 503 Driver.parse_string driver.py
format_str (__init__.py)
% Samples Callee Location
99.2% 470 _format_str_once __init__.py
check_stability_and_equivalence (__init__.py)
% Samples Callee Location
84.0% 383 assert_stable __init__.py
15.1% 69 assert_equivalent __init__.py
assert_stable (__init__.py)
% Samples Callee Location
99.5% 381 _format_str_once __init__.py
Parser.addtoken (parse.py)
% Samples Callee Location
91.6% 219 Parser._addtoken parse.py
2.9% 7 (native) <unknown>
0.8% 2 Parser.classify parse.py
Parser._addtoken (parse.py)
% Samples Callee Location
11.7% 26 Parser.pop parse.py
8.1% 18 Parser.shift parse.py
6.7% 15 (garbage collector) <unknown>
2.2% 5 Parser.push parse.py
_LoaderBasics.exec_module (<frozen importlib._bootstrap_external>)
% Samples Callee Location
100.0% 21 _call_with_frames_removed <frozen importlib._bootstrap>
47.6% 10 SourceLoader.get_code <frozen importlib._bootstrap_external>
_load_unlocked (<frozen importlib._bootstrap>)
% Samples Callee Location
100.0% 21 _LoaderBasics.exec_module <frozen importlib._bootstrap_external>
4.8% 1 module_from_spec <frozen importlib._bootstrap>
4.8% 1 ExtensionFileLoader.exec_module <frozen importlib._bootstrap_external>
_find_and_load_unlocked (<frozen importlib._bootstrap>)
% Samples Callee Location
100.0% 21 _load_unlocked <frozen importlib._bootstrap>
_find_and_load (<frozen importlib._bootstrap>)
% Samples Callee Location
100.0% 21 _find_and_load_unlocked <frozen importlib._bootstrap>
_call_with_frames_removed (<frozen importlib._bootstrap>)
% Samples Callee Location
100.0% 21 (native) <unknown>
_get_module_details (<frozen runpy>)
% Samples Callee Location
100.0% 21 (native) <unknown>
100.0% 21 _get_module_details <frozen runpy>
SourceLoader.get_code (<frozen importlib._bootstrap_external>)
% Samples Callee Location
80.0% 8 _compile_bytecode <frozen importlib._bootstrap_external>
20.0% 2 FileLoader.get_data <frozen importlib._bootstrap_external>
_handle_fromlist (<frozen importlib._bootstrap>)
% Samples Callee Location
100.0% 6 _call_with_frames_removed <frozen importlib._bootstrap>
ExtensionFileLoader.create_module (<frozen importlib._bootstrap_external>)
% Samples Callee Location
100.0% 1 _call_with_frames_removed <frozen importlib._bootstrap>
module_from_spec (<frozen importlib._bootstrap>)
% Samples Callee Location
100.0% 1 ExtensionFileLoader.create_module <frozen importlib._bootstrap_external>
ExtensionFileLoader.exec_module (<frozen importlib._bootstrap_external>)
% Samples Callee Location
100.0% 1 _call_with_frames_removed <frozen importlib._bootstrap>

Hottest call stacks

Call stacks ranked by samples taken in their leaf frame.

Common call stack: format_file_contents (__init__.py) ← format_file_in_place ← reformat_one ← main ← pass_context.<locals>.new_func (decorators.py) ← Context.invoke (core.py) ← (native) ← Command.invoke (core.py) ← Command.main ← (native) ← Command.__call__ (core.py) ← (native) ← patched_main (__init__.py) ← <module> (__main__.py) ← (native) ← _run_code (<frozen runpy>) ← _run_module_code ← run_module ← (native) ← _run_code (<frozen runpy>) ← _run_module_as_main ← (native)

% Samples Call stack
19.3% 184 (garbage collector) ← Driver.parse_tokens (driver.py) ← Driver.parse_string ← lib2to3_parse (parsing.py) ← _format_str_once (__init__.py) ← assert_stable ← check_stability_and_equivalence
10.6% 101 Parser._addtoken (parse.py) ← Parser.addtoken ← Driver.parse_tokens (driver.py) ← Driver.parse_string ← lib2to3_parse (parsing.py) ← _format_str_once (__init__.py) ← format_str
6.7% 64 get_features_used (__init__.py) ← detect_target_versions ← _format_str_once ← format_str
5.7% 54 Parser._addtoken (parse.py) ← Parser.addtoken ← Driver.parse_tokens (driver.py) ← Driver.parse_string ← lib2to3_parse (parsing.py) ← _format_str_once (__init__.py) ← assert_stable ← check_stability_and_equivalence
4.1% 39 parse (ast.py) ← _parse_single_version (parsing.py) ← parse_ast ← assert_equivalent (__init__.py) ← check_stability_and_equivalence
3.8% 36 (garbage collector) ← is_vararg (nodes.py) ← is_split_before_delimiter (brackets.py) ← BracketTracker.mark ← max_delimiter_priority_in_atom ← maybe_make_parens_invisible_in_atom (linegen.py) ← normalize_invisible_parens ← LineGenerator.visit_stmt ← Visitor.visit (nodes.py) ← Visitor.visit_default ← LineGenerator.visit_default (linegen.py) ← LineGenerator.visit_suite ← Visitor.visit (nodes.py) ← LineGenerator.visit_funcdef (linegen.py) ← Visitor.visit (nodes.py) ← Visitor.visit_default ← LineGenerator.visit_default (linegen.py) ← Visitor.visit (nodes.py) ← _format_str_once (__init__.py) ← format_str
3.2% 30 Driver.parse_tokens (driver.py) ← Driver.parse_string ← lib2to3_parse (parsing.py) ← _format_str_once (__init__.py) ← format_str
2.8% 27 get_features_used (__init__.py) ← detect_target_versions ← _format_str_once ← assert_stable ← check_stability_and_equivalence
2.2% 21 Driver.parse_tokens (driver.py) ← Driver.parse_string ← lib2to3_parse (parsing.py) ← _format_str_once (__init__.py) ← assert_stable ← check_stability_and_equivalence
1.3% 12 (garbage collector) ← Parser._addtoken (parse.py) ← Parser.addtoken ← Driver.parse_tokens (driver.py) ← Driver.parse_string ← lib2to3_parse (parsing.py) ← _format_str_once (__init__.py) ← format_str
1.2% 11 Parser.pop (parse.py) ← Parser._addtoken ← Parser.addtoken ← Driver.parse_tokens (driver.py) ← Driver.parse_string ← lib2to3_parse (parsing.py) ← _format_str_once (__init__.py) ← format_str
1.1% 10 assert_equivalent (__init__.py) ← check_stability_and_equivalence
0.9% 9 generate_tokens (tokenize.py) ← (native) ← TokenProxy.__next__ (driver.py) ← (native) ← Driver.parse_tokens (driver.py) ← Driver.parse_string ← lib2to3_parse (parsing.py) ← _format_str_once (__init__.py) ← assert_stable ← check_stability_and_equivalence
0.8% 8 Parser.addtoken (parse.py) ← Driver.parse_tokens (driver.py) ← Driver.parse_string ← lib2to3_parse (parsing.py) ← _format_str_once (__init__.py) ← format_str
0.8% 8 convert_one_fmt_off_pair (comments.py) ← normalize_fmt_off ← _format_str_once (__init__.py) ← format_str
0.8% 8 generate_tokens (tokenize.py) ← (native) ← TokenProxy.__next__ (driver.py) ← (native) ← Driver.parse_tokens (driver.py) ← Driver.parse_string ← lib2to3_parse (parsing.py) ← _format_str_once (__init__.py) ← format_str
0.8% 8 _stringify_ast (parsing.py) ← _stringify_ast_with_new_parent ← _stringify_ast ← _stringify_ast_with_new_parent ← _stringify_ast ← _stringify_ast_with_new_parent ← _stringify_ast ← (native) ← assert_equivalent (__init__.py) ← check_stability_and_equivalence
0.6% 6 generate_tokens (tokenize.py) ← (native) ← Parser.addtoken (parse.py) ← Driver.parse_tokens (driver.py) ← Driver.parse_string ← lib2to3_parse (parsing.py) ← _format_str_once (__init__.py) ← format_str
0.6% 6 convert (pytree.py) ← Parser.pop (parse.py) ← Parser._addtoken ← Parser.addtoken ← Driver.parse_tokens (driver.py) ← Driver.parse_string ← lib2to3_parse (parsing.py) ← _format_str_once (__init__.py) ← format_str
0.6% 6 EmptyLineTracker.maybe_empty_lines (lines.py) ← _format_str_once (__init__.py) ← format_str