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
156
157
158
159
160
161
162
163
164
165
166
167
|
#!/usr/bin/env python3
# holidays
# --------
# A fast, efficient Python library for generating country, province and state
# specific sets of holidays on the fly. It aims to make determining whether a
# specific date is a holiday as fast and flexible as possible.
#
# Authors: Vacanza Team and individual contributors (see CONTRIBUTORS file)
# dr-prodigy <dr.prodigy.github@gmail.com> (c) 2017-2023
# ryanss <ryanssdev@icloud.com> (c) 2014-2017
# Website: https://github.com/vacanza/holidays
# License: MIT (see LICENSE file)
import argparse
import json
import shutil
import sys
import warnings
from concurrent.futures import ProcessPoolExecutor
from pathlib import Path
from time import perf_counter
sys.path.insert(0, str(Path.cwd())) # Make holidays visible.
from holidays import (
country_holidays,
financial_holidays,
list_supported_countries,
list_supported_financial,
)
class SnapshotGenerator:
"""Creates a snapshot of available holidays for supported entities."""
years = range(1950, 2051)
def __init__(self) -> None:
arg_parser = argparse.ArgumentParser()
entities_group = arg_parser.add_mutually_exclusive_group()
entities_group.add_argument(
"-c",
"--country",
action="extend",
nargs="+",
default=[],
help="Country codes to use for snapshot generation",
type=str,
)
entities_group.add_argument(
"-m",
"--market",
action="extend",
nargs="+",
default=[],
help="Market codes to use for snapshot generation",
type=str,
)
self.args = arg_parser.parse_args()
@staticmethod
def prepare_snapshot_directory(snapshot_path: Path) -> None:
"""Prepare a directory for snapshots."""
shutil.rmtree(snapshot_path, ignore_errors=True)
snapshot_path.mkdir(parents=True, exist_ok=True)
@staticmethod
def save(snapshot: dict, file_path: Path) -> None:
"""Save snapshot to a JSON file."""
file_path.write_text(
json.dumps(
{str(dt): name for dt, name in sorted(snapshot.items())},
ensure_ascii=False,
indent=4,
)
+ "\n", # Get along with pre-commit.
encoding="utf-8",
newline="\n",
)
@staticmethod
def _country_subdiv_snapshot_worker(
args: tuple[str, str | None, tuple[str, ...], range, Path],
) -> None:
"""Worker for generating country holiday snapshots."""
warnings.simplefilter("ignore")
country_code, subdiv, supported_categories, years, snapshot_path = args
filename = f"{country_code}_{(subdiv or 'COMMON').replace(' ', '_').upper()}.json"
file_path = snapshot_path / filename
snapshot = country_holidays(
country_code,
subdiv=subdiv,
years=years,
categories=supported_categories,
language="en_US",
)
SnapshotGenerator.save(snapshot, file_path)
@staticmethod
def _financial_snapshot_worker(args: tuple[str, range, Path]) -> None:
"""Worker for generating financial market holiday snapshots."""
warnings.simplefilter("ignore")
market_code, years, snapshot_path = args
file_path = snapshot_path / f"{market_code}.json"
snapshot = financial_holidays(
market_code,
years=years,
language="en_US",
)
SnapshotGenerator.save(snapshot, file_path)
def generate_country_snapshots(self) -> None:
"""Generates country snapshots."""
if self.args.market:
return None
supported_countries = list_supported_countries(include_aliases=False)
country_list = self.args.country or list(supported_countries.keys())
if unknown_countries := set(country_list).difference(supported_countries.keys()):
raise ValueError(f"Countries {', '.join(unknown_countries)} not available")
snapshot_path = Path("snapshots/countries")
if not self.args.country:
self.prepare_snapshot_directory(snapshot_path)
work_items: list[tuple[str, str | None, tuple[str, ...], range, Path]] = []
for country_code in country_list:
country = country_holidays(country_code)
for subdiv in (None, *country.subdivisions):
work_items.append(
(country_code, subdiv, country.supported_categories, self.years, snapshot_path)
)
with ProcessPoolExecutor() as executor:
list(executor.map(SnapshotGenerator._country_subdiv_snapshot_worker, work_items))
def generate_financial_snapshots(self) -> None:
"""Generates financial snapshots."""
if self.args.country:
return None
supported_markets = list_supported_financial(include_aliases=False)
market_list = self.args.market or list(supported_markets.keys())
if unknown_markets := set(market_list).difference(supported_markets.keys()):
raise ValueError(f"Markets {', '.join(unknown_markets)} not available")
snapshot_path = Path("snapshots/financial")
if not self.args.market:
self.prepare_snapshot_directory(snapshot_path)
work_items: list[tuple[str, range, Path]] = []
for market_code in market_list:
work_items.append((market_code, self.years, snapshot_path))
with ProcessPoolExecutor() as executor:
list(executor.map(SnapshotGenerator._financial_snapshot_worker, work_items))
def run(self):
"""Runs snapshot files generation process."""
self.generate_country_snapshots()
self.generate_financial_snapshots()
if __name__ == "__main__":
total_time_start = perf_counter()
SnapshotGenerator().run()
total_time_end = perf_counter()
print(f"[TIMER] Total snapshot runtime: {total_time_end - total_time_start:.2f} seconds")
|
