Since the last week, I have been spending a lot of time scripting in Python, and one of the most difficult things that I found was going through the long lines of code that would extend out of my screen width. I realized that the absence of a horizontal bar was a big problem. Luckily I found a solution online for adding the Horizontal Scroll bar in IDLE by modifying the EditorWindow.py file located in the “….\Python34\Lib\idlelib” directory (check the directory where Python was installed).
To make the changes in IDLE, open EditorWindow.py and perform a search for ‘vbar’ which is in the EditorWindow class, __init__ method.
Add those lines that have ### appended to them and then restart the IDLE.
self.vbar = vbar = Scrollbar(top, name=’vbar’)
self.hbar = hbar = Scrollbar(top, orient=HORIZONTAL, name=’hbar’) ###
vbar[‘command’] = text.yview
hbar[‘command’] = text.xview ###
hbar.pack(side=BOTTOM, fill=X) ###
text[‘yscrollcommand’] = vbar.set
text[‘xscrollcommand’] = hbar.set ###