Been suffering this problem for a while. I just found that when using Ctrl-qCtrl-j (That’s lowercase Q, J, no need to hold the shift key) will add a linefeed to an existing IPython edit session.
for li in some_list: print(li)
Moving the cursor after the colon and pressing Ctrl-qCtrl-j
for li in some_list:
print(li)
IPython: 5.2.1, iTerm2: 3.0.15, macOS: 10.12.6