-
Notifications
You must be signed in to change notification settings - Fork 4.7k
Expand file tree
/
Copy pathvalidate_coordinates.py
More file actions
86 lines (66 loc) · 2.14 KB
/
Copy pathvalidate_coordinates.py
File metadata and controls
86 lines (66 loc) · 2.14 KB
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
"""
Validate Coordinates
Validate if given parameters are valid geographical coordinates.
Latitude must be between -90 and 90, longitude between -180 and 180.
Reference: https://en.wikipedia.org/wiki/Geographic_coordinate_system
Complexity:
Time: O(n) where n is the length of the coordinate string
Space: O(1)
"""
from __future__ import annotations
import re
def is_valid_coordinates_0(coordinates: str) -> bool:
"""Validate coordinates by character checking and parsing.
Args:
coordinates: A string of the form "lat, lng".
Returns:
True if the coordinates are valid, False otherwise.
Examples:
>>> is_valid_coordinates_0("-23, 25")
True
"""
for char in coordinates:
if not (char.isdigit() or char in ["-", ".", ",", " "]):
return False
parts = coordinates.split(", ")
if len(parts) != 2:
return False
try:
latitude = float(parts[0])
longitude = float(parts[1])
except ValueError:
return False
return -90 <= latitude <= 90 and -180 <= longitude <= 180
def is_valid_coordinates_1(coordinates: str) -> bool:
"""Validate coordinates by splitting and converting to floats.
Args:
coordinates: A string of the form "lat, lng".
Returns:
True if the coordinates are valid, False otherwise.
Examples:
>>> is_valid_coordinates_1("43.91343345, 143")
True
"""
try:
latitude, longitude = [
abs(float(part)) for part in coordinates.split(",") if "e" not in part
]
except ValueError:
return False
return latitude <= 90 and longitude <= 180
def is_valid_coordinates_regular_expression(coordinates: str) -> bool:
"""Validate coordinates using a regular expression.
Args:
coordinates: A string of the form "lat, lng".
Returns:
True if the coordinates are valid, False otherwise.
Examples:
>>> is_valid_coordinates_regular_expression("4, -3")
True
"""
return bool(
re.match(
r"-?(\d|[1-8]\d|90)\.?\d*, -?(\d|[1-9]\d|1[0-7]\d|180)\.?\d*$",
coordinates,
)
)