Fix for dynamically evaluated source code traceback (#14345)

And add test.

This should close  #14057

IPython/core/tests/test_ultratb.py

@@ -14,7 +14,7 b' from tempfile import TemporaryDirectory'
 
 from IPython.core.ultratb import ColorTB, VerboseTB
 from IPython.testing import tools as tt
-from IPython.testing.decorators import onlyif_unicode_paths
+from IPython.testing.decorators import onlyif_unicode_paths, skip_without
 from IPython.utils.syspathcontext import prepended_to_syspath
 
 file_1 = """1
@@ -177,6 +177,20 b' class IndentationErrorTest(unittest.TestCase):'
                 with tt.AssertPrints("zoon()", suppress=False):
                     ip.magic('run %s' % fname)
 
+@skip_without("pandas")
+def test_dynamic_code():
+    code = """
+    import pandas
+    df = pandas.DataFrame([])
+
+    # Important: only fails inside of an "exec" call:
+    exec("df.foobarbaz()")
+    """
+
+    with tt.AssertPrints("Could not get source"):
+        ip.run_cell(code)
+
+
 se_file_1 = """1
 2
 7/

IPython/core/ultratb.py

@@ -743,6 +743,7 b' class FrameInfo:'
     lineno: Tuple[int]
     # number of context lines to use
     context: Optional[int]
+    raw_lines: List[str]
 
     @classmethod
     def _from_stack_data_FrameInfo(cls, frame_info):
@@ -777,8 +778,13 b' class FrameInfo:'
 
         # self.lines = []
         if sd is None:
-            ix = inspect.getsourcelines(frame)
-            self.raw_lines = ix[0]
+            try:
+                # return a list of source lines and a starting line number
+                self.raw_lines = inspect.getsourcelines(frame)[0]
+            except OSError:
+                self.raw_lines = [
+                    "'Could not get source, probably due dynamically evaluated source code.'"
+                ]
 
     @property
     def variables_in_executing_piece(self):