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
|
import time
import inspect
import traceback
import inspect
from functools import wraps
import log_util as log_util
logger = log_util.FishLogger(path=__file__ + ".log", tag="decorator_util")
print = logger.debug
def trace_time(func):
def wrapper(*args, **kwargs):
# start the timer
start_time = time.time()
# call the decorated function
result = func(*args, **kwargs)
# remeasure the time
end_time = time.time()
# compute the elapsed time and print it
execution_time = end_time - start_time
print(f"Execution time: {execution_time} seconds")
# return the result of the decorated function execution
return result
# return reference to the wrapper function
return wrapper
def trace_args(func):
def wrapper(*args, **kwargs):
# print the fucntion name and arguments
caller_frame = inspect.currentframe().f_back
file_name = caller_frame.f_code.co_filename
line_number = caller_frame.f_lineno
print(
f"Calling {func.__name__} at {file_name}:{line_number} with args: {args} kwargs: {kwargs}"
)
# call the function
result = func(*args, **kwargs)
# print the results
print(f"{func.__name__} returned: {result}")
return result
return wrapper
def trace_exception(func):
def wrapper(*args, **kwargs):
try:
return func(*args, **kwargs)
except Exception as e:
# Handle the exception
exception_msg = traceback.format_exc()
logger.error(f"An exception occurred: \n{exception_msg}")
# Optionally, perform additional error handling or logging
# Reraise the exception if needed
return wrapper
def trace_validate(*validators):
def decorator(func):
@wraps(func)
def wrapper(*args, **kwargs):
arg_names = list(inspect.signature(func).parameters.keys())
# 将args和kwargs合并为一个列表，以便与validators一一对应
all_args = list(args) + [
kwargs.get(key)
for key in func.__code__.co_varnames[
len(args) : func.__code__.co_argcount
]
]
# 校验每个参数
for name, validator, arg in zip(arg_names, validators, all_args):
if not validator(arg):
# 获取validator的源代码
lambda_source = inspect.getsource(validator)
raise ValueError(
f"Invalid argument: {name}={arg}, expected: \n{lambda_source}"
)
return func(*args, **kwargs)
return wrapper
return decorator
def trace_retry(max_attempts, delay=1):
def decorator(func):
def wrapper(*args, **kwargs):
attempts = 0
while attempts < max_attempts:
try:
return func(*args, **kwargs)
except Exception as e:
attempts += 1
print(f"Attempt {attempts} failed: {e}")
time.sleep(delay)
print(f"Function failed after {max_attempts} attempts")
return wrapper
return decorator
|
次阅读