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I have a big python script, with multiple files, and I need to know where a method was called. Is there a backtrace function in python like debug_backtrace in php?
974
print_tb(tb, limit = None, file = None) : If limit is positive it prints upto limit stack trace entries from traceback object tb. Otherwise, print the last abs(limit) entries. If limit is omitted or None, all entries are printed. If file is omitted or None, the output goes to sys.
The traceback error also shows the type of error and information about that error. The above case is IndexError: list index out of range . You can fix it using the valid index number to retrieve an item from a list.
The Python interpreter uses a call stack to run a Python program. When a function is called in Python, a new frame is pushed onto the call stack for its local execution, and every time a function call returns, its frame is popped off the call stack.
See the traceback module.
import traceback
def foo():
bar()
def bar():
baz()
def baz():
traceback.print_stack()
# or trace = traceback.extract_stack()
foo()
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