python returns 中的 getchar 权限被拒绝(android 8.0)
getchar in python returns permission denied (andorid 8.0)
我正在研究 termux
、android 8.0.
我正在使用 getchar
的以下实现:
class _Getch:
"""Gets a single character from standard input. Does not echo to the
screen."""
def __init__(self):
try:
self.impl = _GetchWindows()
except ImportError:
self.impl = _GetchUnix()
def __call__(self): return self.impl()
class _GetchUnix:
def __init__(self):
import tty, sys
def __call__(self):
import sys, tty, termios
fd = sys.stdin.fileno()
old_settings = termios.tcgetattr(fd)
try:
tty.setraw(sys.stdin.fileno())
ch = sys.stdin.read(1)
finally:
termios.tcsetattr(fd, termios.TCSADRAIN, old_settings)
调用 tcsetattr returns 权限被拒绝。我猜是一个新的 security feature
。
Traceback (most recent call last):
File "piano.py", line 103, in <module>
char=getch()
File "piano.py", line 21, in __call__
def __call__(self): return self.impl()
File "piano.py", line 33, in __call__
tty.setraw(sys.stdin.fileno())
File "/data/data/com.termux/files/usr/lib/python3.6/tty.py", line 28, in setraw
tcsetattr(fd, when, mode)
termios.error: (13, 'Permission denied')
如何克服这个问题? (readchar 包引发相同的错误)
谢谢。
嗯,这是我的解决方案。
class _GetchUnix:
def __init__(self):
import tty, sys
def __call__(self):
import subprocess,sys
t=subprocess.check_output(['bash','-c','read -s -n1 ans; echo $ans'],stdin=sys.stdin)
return chr(t[0])
我正在研究 termux
、android 8.0.
我正在使用 getchar
的以下实现:
class _Getch:
"""Gets a single character from standard input. Does not echo to the
screen."""
def __init__(self):
try:
self.impl = _GetchWindows()
except ImportError:
self.impl = _GetchUnix()
def __call__(self): return self.impl()
class _GetchUnix:
def __init__(self):
import tty, sys
def __call__(self):
import sys, tty, termios
fd = sys.stdin.fileno()
old_settings = termios.tcgetattr(fd)
try:
tty.setraw(sys.stdin.fileno())
ch = sys.stdin.read(1)
finally:
termios.tcsetattr(fd, termios.TCSADRAIN, old_settings)
调用 tcsetattr returns 权限被拒绝。我猜是一个新的 security feature
。
Traceback (most recent call last):
File "piano.py", line 103, in <module>
char=getch()
File "piano.py", line 21, in __call__
def __call__(self): return self.impl()
File "piano.py", line 33, in __call__
tty.setraw(sys.stdin.fileno())
File "/data/data/com.termux/files/usr/lib/python3.6/tty.py", line 28, in setraw
tcsetattr(fd, when, mode)
termios.error: (13, 'Permission denied')
如何克服这个问题? (readchar 包引发相同的错误)
谢谢。
嗯,这是我的解决方案。
class _GetchUnix:
def __init__(self):
import tty, sys
def __call__(self):
import subprocess,sys
t=subprocess.check_output(['bash','-c','read -s -n1 ans; echo $ans'],stdin=sys.stdin)
return chr(t[0])