如何使Perl和Python打印正在执行的程序的每一行?

Devel::Trace 是Perl模拟 trace module 是蟒蛇的。

Devel::DumpTrace 2011年发布,功能超过 Devel::Trace 例如,在跟踪输出中评估变量值。

python -m trace -t main.py

测试程序:

Me.Py

from a import g
def f(i):
    g(i)
for i in range(3):
    f(i)

A.Py

def g(i):
    print i

输出:

 --- modulename: main, funcname: <module>
main.py(1): from a import g
 --- modulename: a, funcname: <module>
a.py(1): def g(i):
main.py(2): def f(i):
main.py(4): for i in range(3):
main.py(5):     f(i)
 --- modulename: main, funcname: f
main.py(3):     g(i)
 --- modulename: a, funcname: g
a.py(2):     print i
0
main.py(4): for i in range(3):
main.py(5):     f(i)
 --- modulename: main, funcname: f
main.py(3):     g(i)
 --- modulename: a, funcname: g
a.py(2):     print i
1
main.py(4): for i in range(3):
main.py(5):     f(i)
 --- modulename: main, funcname: f
main.py(3):     g(i)
 --- modulename: a, funcname: g
a.py(2):     print i
2
main.py(4): for i in range(3):
 --- modulename: trace, funcname: _unsettrace
trace.py(80):         sys.settrace(None)

在Ubuntu 16.10、python 2.7.12上测试。