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+#  decorator to measure the execution time per line 
+
+This decorator measures the amount of time it takes to execute a function and displays a detailed summary.
+
+```Python
+from cProfile import Profile
+
+def explain_time(f):
+    def wrapper(*args, **kwargs):
+        profile = Profile()
+        profile.enable()
+        output = f(*args, **kwargs)
+        profile.disable()
+        profile.print_stats()
+        return output
+    return wrapper
+
+@explain_time
+def test():
+    d = {"a": -1}
+    return d.get("a")
+
+>>> test()
+         3 function calls in 0.000 seconds
+
+   Ordered by: standard name
+
+   ncalls  tottime  percall  cumtime  percall filename:lineno(function)
+        1    0.000    0.000    0.000    0.000 <ipython-input-209-8a9237b67823>:11(test)
+        1    0.000    0.000    0.000    0.000 {method 'disable' of '_lsprof.Profiler' objects}
+        1    0.000    0.000    0.000    0.000 {method 'get' of 'dict' objects}
+
+```
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