escape sequence r'\' giving compilation error

[kirankotari]

BPO	25978
Nosy	@bitdancer

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = None
closed_at = <Date 2015-12-30.01:50:38.878>
created_at = <Date 2015-12-30.01:37:40.064>
labels = ['invalid', 'build', 'expert-2to3']
title = "escape sequence r'\\' giving compilation error"
updated_at = <Date 2015-12-30.01:50:38.872>
user = 'https://bugs.python.org/KiranKotari'

bugs.python.org fields:

activity = <Date 2015-12-30.01:50:38.872>
actor = 'r.david.murray'
assignee = 'none'
closed = True
closed_date = <Date 2015-12-30.01:50:38.878>
closer = 'r.david.murray'
components = ['2to3 (2.x to 3.x conversion tool)']
creation = <Date 2015-12-30.01:37:40.064>
creator = 'Kiran Kotari'
dependencies = []
files = []
hgrepos = []
issue_num = 25978
keywords = []
message_count = 2.0
messages = ['257221', '257222']
nosy_count = 2.0
nosy_names = ['r.david.murray', 'Kiran Kotari']
pr_nums = []
priority = 'normal'
resolution = 'not a bug'
stage = 'resolved'
status = 'closed'
superseder = None
type = 'compile error'
url = 'https://bugs.python.org/issue25978'
versions = ['Python 3.5']

[kirankotari]

>>> '\test'.lstrip(r'\')
	       
SyntaxError: EOL while scanning string literal

[bitdancer]

https://docs.python.org/3/faq/design.html?highlight=raw%20strings#why-can-t-raw-strings-r-strings-end-with-a-backslash