Iterating a text file by line should not implicitly disable tell

GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2019-05-24.16:08:32.775>
labels = ['3.8', '3.7', 'library', 'expert-IO']
title = 'Iterating a text file by line should not implicitly disable tell'
updated_at = <Date 2019-05-28.05:55:40.301>
user = 'https://github.com/MojoVampire'

bugs.python.org fields:

activity = <Date 2019-05-28.05:55:40.301>
actor = 'Jeffrey.Kintscher'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Library (Lib)', 'IO']
creation = <Date 2019-05-24.16:08:32.775>
creator = 'josh.r'
dependencies = []
files = []
hgrepos = []
issue_num = 37036
keywords = []
message_count = 2.0
messages = ['343402', '343404']
nosy_count = 2.0
nosy_names = ['josh.r', 'Jeffrey.Kintscher']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = None
url = 'https://bugs.python.org/issue37036'
versions = ['Python 3.7', 'Python 3.8']