Make makeunicode.py script more readable

[scoder]

BPO	36885
Nosy	@scoder, @benjaminp
PRs	bpo-36885: Clean up and reduce visual clutter in the makeunicode.py script. #7558

^{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 2019-06-01.19:50:43.129>
created_at = <Date 2019-05-11.07:08:11.381>
labels = ['type-feature', '3.8']
title = 'Make makeunicode.py script more readable'
updated_at = <Date 2019-06-01.19:50:43.129>
user = 'https://github.com/scoder'

bugs.python.org fields:

activity = <Date 2019-06-01.19:50:43.129>
actor = 'scoder'
assignee = 'none'
closed = True
closed_date = <Date 2019-06-01.19:50:43.129>
closer = 'scoder'
components = ['Demos and Tools']
creation = <Date 2019-05-11.07:08:11.381>
creator = 'scoder'
dependencies = []
files = []
hgrepos = []
issue_num = 36885
keywords = ['patch']
message_count = 1.0
messages = ['342171']
nosy_count = 2.0
nosy_names = ['scoder', 'benjamin.peterson']
pr_nums = ['7558']
priority = 'low'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = 'enhancement'
url = 'https://bugs.python.org/issue36885'
versions = ['Python 3.8']

[scoder]

The code generation in the makeunicode.py script is more difficult to read than necessary due to the many use of "print(file=fp)" everywhere. Moving the "file" argument out of the way makes it easier to read through the actual code that is being generated.