This is just a short script implementing a logger of the trace of a Python program’s execution.
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import datetime
from typing import Optional, Callable, Any, Tuple
import sys
import click
def trace_function(frame: Any, event: str, arg: Any) -> Optional[Callable]:
"""
Trace function for monitoring function calls.
Args:
frame (frame): The current frame being executed.
event (str): The event type triggering the trace function.
arg (Any): The argument associated with the event.
Returns:
Optional[Callable]: The trace function or None to stop tracing.
"""
if not hasattr(trace_function, 'log_initialized'):
# Initialize log file with column titles if not already done
with open('trace_log.txt', 'w') as log_file:
log_file.write("Timestamp | Event | Function | File | Line | Argument\n")
trace_function.log_initialized = True
current_time = datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S")
file_name = frame.f_globals.get('__file__', 'unknown')
log_entry = f"{current_time} | {event} | {frame.f_code.co_name} | {file_name} | {frame.f_lineno} | {arg}\n"
with open('trace_log.txt', 'a') as log_file:
log_file.write(log_entry)
return trace_function
@click.command()
@click.argument('target_script', type=click.Path(exists=True))
def trace(target_script: str) -> None:
"""
Trace function to monitor the execution of a target script.
Args:
target_script (str): Path to the target script to be traced.
Returns:
None
"""
# Set the trace function
sys.settrace(trace_function)
# Run the target script
with open(target_script, 'r') as script_file:
exec(script_file.read(), {})
# Disable the trace function
sys.settrace(None)
if __name__ == '__main__':
trace()
Using it is straightforward:
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$ Python trace_util.py you_python_script.py