Created
January 12, 2017 20:11
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import dis | |
import inspect | |
def trace(): | |
print("hello!") | |
def insert_code(code_to_modify, lines_to_insert, before_line): | |
lines = inspect.getsourcelines(code_to_modify)[0] | |
line_for_break = lines[before_line] | |
spaces = line_for_break[:len(line_for_break)-len(line_for_break.lstrip())] | |
lines_insert_indent = [] | |
for line in lines_to_insert: | |
lines_insert_indent.append(spaces + line) | |
new_lines = lines[1:before_line] + lines_insert_indent + lines[before_line:] | |
res = "".join(new_lines) | |
print(res) | |
return compile(res, '<string>', 'exec') | |
my_func = """def foo(): | |
trace() | |
a = 1 | |
b = 2 | |
""" | |
code = compile(my_func, '<string>', 'exec') | |
dis.dis(code) | |
loc_dict = {} | |
res = eval(code, {}, loc_dict) | |
print(loc_dict) | |
new_frame_obj = list(loc_dict.values())[0] | |
new_code = new_frame_obj.__code__ | |
dis.dis(new_code) |
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