问题
I am trying to update the last line in PyCharm's console. Say, I print a and then I want to change it to c. However, I encounter the following problem. When I run:
print 'a\bc'
it prints
a c
while the desired output (which is also what I see in the Windows console) is:
c
Is there a way to move the cursor back in PyCharm's console? or maybe delete the whole line?
回答1:
It's a known bug: http://youtrack.jetbrains.com/issue/PY-11300
If you care about this, please get an account on the bug tracker and upload the bug to give it more attention.
回答2:
This is not a bug, this is a limitation of the interactive console found both in PyCharm, and in the IDLE shell.
When using the command prompt of windows, or a linux shell - the \b character is interpreted as a backspace and implemented as it is being parsed - However, in the interactive console of PyCharm and IDLE the \b character and many others are disabled, and instead you simply get the ASCII representation of the character (a white space in most cases).
回答3:
The \r works. I know this is ASCII Carriage Return, but i use this as a workaround
print("\ra")
print("\rc")
will yield in c in the console
By the way, backspace is a ASCII Character
来源：https://stackoverflow.com/questions/19925189/b-doesnt-print-backspace-in-pycharm-console