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Replace \x08 with \b #1

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363c259
Replace \x08 with \b
turicas Oct 11, 2017
42b1ac3
Use \r + print(flush=True) instead of stdout.flush
turicas Oct 11, 2017
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8 changes: 2 additions & 6 deletions lab-spinner/spinner_await.py
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Original file line number Diff line number Diff line change
Expand Up @@ -8,21 +8,17 @@

import asyncio
import itertools
import sys


async def spin(msg): # <1>
write, flush = sys.stdout.write, sys.stdout.flush
for char in itertools.cycle('|/—\\'):
status = char + ' ' + msg
write(status)
flush()
write('\x08' * len(status))
print('\r' + status, end='', flush=True)
try:
await asyncio.sleep(.1) # <2>
except asyncio.CancelledError: # <3>
break
write(' ' * len(status) + '\x08' * len(status))
print('\r', end='', flush=True)


async def slow_function(): # <4>
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8 changes: 2 additions & 6 deletions lab-spinner/spinner_curio.py
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Original file line number Diff line number Diff line change
Expand Up @@ -11,21 +11,17 @@

import curio
import itertools
import sys


async def spin(msg): # <1>
write, flush = sys.stdout.write, sys.stdout.flush
for char in itertools.cycle('|/-\\'):
status = char + ' ' + msg
write(status)
flush()
write('\x08' * len(status))
print('\r' + status, end='', flush=True)
try:
await curio.sleep(.1) # <2>
except curio.CancelledError: # <3>
break
write(' ' * len(status) + '\x08' * len(status))
print('\r', end='')


async def slow_function(): # <4>
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8 changes: 2 additions & 6 deletions lab-spinner/spinner_thread.py
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Original file line number Diff line number Diff line change
Expand Up @@ -9,19 +9,15 @@
import threading
import itertools
import time
import sys


def spin(msg, done): # <1>
write, flush = sys.stdout.write, sys.stdout.flush
for char in itertools.cycle('|/-\\'):
status = char + ' ' + msg
write(status)
flush()
write('\x08' * len(status))
print('\r' + status, end='', flush=True)
if done.wait(.1): # <2>
break # <3>
write(' ' * len(status) + '\x08' * len(status))
print('\r', end='')


def slow_function(): # <4>
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8 changes: 2 additions & 6 deletions lab-spinner/spinner_yield.py
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Original file line number Diff line number Diff line change
Expand Up @@ -8,22 +8,18 @@

import asyncio
import itertools
import sys


@asyncio.coroutine # <1>
def spin(msg):
write, flush = sys.stdout.write, sys.stdout.flush
for char in itertools.cycle('|/-\\'):
status = char + ' ' + msg
write(status)
flush()
write('\x08' * len(status))
print('\r' + status, end='', flush=True)
try:
yield from asyncio.sleep(.1) # <2>
except asyncio.CancelledError: # <3>
break
write(' ' * len(status) + '\x08' * len(status))
print('\r', end='')


@asyncio.coroutine # <4>
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