[issue9519] IDLE cannot do example 4.1 in tutorial (if statements)

[Robert Buckley]

New submission from Robert Buckley :

In both Python 2.7 and 3.1 the IDLE is unable to handle example 4.1 in the 
tutorial (if statements). Works OK with the command line shell, but not the 
IDLE shell.

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messages: 112930
nosy: drbuckle
priority: normal
severity: normal
status: open
title: IDLE cannot do example 4.1 in tutorial (if statements)
type: behavior
versions: Python 3.1

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[issue9519] IDLE cannot do example 4.1 in tutorial (if statements)

[Robert Buckley]

Robert Buckley  added the comment:

See attached file

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Added file: http://bugs.python.org/file18411/ISSUE_9519.rtf

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[issue9519] IDLE cannot do example 4.1 in tutorial (if statements)

[Robert Buckley]

Robert Buckley  added the comment:

Yes, thank you. Using BACKSPACE to unindent works when I am using an indented 
block inside a first or subsequent indented block, e.g., inside a simple 
funtion. That feature does not work, as illustrated in example 4.1, when using 
IDLE.

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status: closed -> open

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[issue9519] IDLE cannot do example 4.1 in tutorial (if statements)

[Robert Buckley]

Robert Buckley  added the comment:

I can say that more clearly. The backspace feature for ending a block does not 
work in IDLE when attempting to end a block that had no indentation. Example:
>>> if a < 4:
  a = 0 # Assume this is end of the 'if' block; that you want to
# return to column 1, in line below the 'i'. The use of
# BACKSPACE in IDLE will fail to achieve the desired
# result and will cause ERROR.

Another example:
>>> if a < 4:
  a = 0
  while b < 7:
a = a + b  # Assume this is end of 'while' block; that
   # you want next line to begin directly below
   # the 'w'. Use of BACKSPACE in IDLE will
   # work correctly. But if you ultimately want
   # to end the initial 'if' block, BACKSPACE
   # will again fail and result in ERROR.

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