diff options
| -rw-r--r-- | lab/run_trace.py | 32 | ||||
| -rw-r--r-- | lab/sample.py | 5 | ||||
| -rw-r--r-- | lab/trace_sample.py | 57 |
3 files changed, 32 insertions, 62 deletions
diff --git a/lab/run_trace.py b/lab/run_trace.py new file mode 100644 index 00000000..3822a804 --- /dev/null +++ b/lab/run_trace.py @@ -0,0 +1,32 @@ +"""Run a simple trace function on a file of Python code.""" + +import os, sys + +nest = 0 + +def trace(frame, event, arg): + global nest + + if nest is None: + # This can happen when Python is shutting down. + return None + + print "%s%s %s %d @%d" % ( + " " * nest, + event, + os.path.basename(frame.f_code.co_filename), + frame.f_lineno, + frame.f_lasti, + ) + + if event == 'call': + nest += 1 + if event == 'return': + nest -= 1 + + return trace + +the_program = sys.argv[1] + +sys.settrace(trace) +execfile(the_program) diff --git a/lab/sample.py b/lab/sample.py deleted file mode 100644 index bb628484..00000000 --- a/lab/sample.py +++ /dev/null @@ -1,5 +0,0 @@ -a, b = 1, 0 -if a or b or fn(): - # Hey - a = 3 -d = 4 diff --git a/lab/trace_sample.py b/lab/trace_sample.py deleted file mode 100644 index 3f819199..00000000 --- a/lab/trace_sample.py +++ /dev/null @@ -1,57 +0,0 @@ -import os, sys - -global nest -nest = 0 - -def trace(frame, event, arg): - #if event == 'line': - global nest - - print "%s%s %s %d" % ( - " " * nest, - event, - os.path.basename(frame.f_code.co_filename), - frame.f_lineno, - ) - - if event == 'call': - nest += 1 - if event == 'return': - nest -= 1 - - return trace - -def trace2(frame, event, arg): - #if event == 'line': - global nest - - print "2: %s%s %s %d" % ( - " " * nest, - event, - os.path.basename(frame.f_code.co_filename), - frame.f_lineno, - ) - - if event == 'call': - nest += 1 - if event == 'return': - nest -= 1 - - return trace2 - -sys.settrace(trace) - -def bar(): - print "nar" - -a = 26 -def foo(n): - a = 28 - sys.settrace(sys.gettrace()) - bar() - a = 30 - return 2*n - -print foo(a) -#import sample -#import littleclass |