1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
|
# Copyright (c) 2012 Georgios Verigakis <verigak@gmail.com>
#
# Permission to use, copy, modify, and distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
from __future__ import division, print_function
from collections import deque
from datetime import timedelta
from math import ceil
from sys import stderr
try:
from time import monotonic
except ImportError:
from time import time as monotonic
__version__ = '1.6'
HIDE_CURSOR = '\x1b[?25l'
SHOW_CURSOR = '\x1b[?25h'
class Infinite(object):
file = stderr
sma_window = 10 # Simple Moving Average window
check_tty = True
hide_cursor = True
def __init__(self, message='', **kwargs):
self.index = 0
self.start_ts = monotonic()
self.avg = 0
self._avg_update_ts = self.start_ts
self._ts = self.start_ts
self._xput = deque(maxlen=self.sma_window)
for key, val in kwargs.items():
setattr(self, key, val)
self._max_width = 0
self._hidden_cursor = False
self.message = message
if self.file and self.is_tty():
if self.hide_cursor:
print(HIDE_CURSOR, end='', file=self.file)
self._hidden_cursor = True
self.writeln('')
def __del__(self):
if self._hidden_cursor:
print(SHOW_CURSOR, end='', file=self.file)
def __getitem__(self, key):
if key.startswith('_'):
return None
return getattr(self, key, None)
@property
def elapsed(self):
return int(monotonic() - self.start_ts)
@property
def elapsed_td(self):
return timedelta(seconds=self.elapsed)
def update_avg(self, n, dt):
if n > 0:
xput_len = len(self._xput)
self._xput.append(dt / n)
now = monotonic()
# update when we're still filling _xput, then after every second
if (xput_len < self.sma_window or
now - self._avg_update_ts > 1):
self.avg = sum(self._xput) / len(self._xput)
self._avg_update_ts = now
def update(self):
pass
def start(self):
pass
def writeln(self, line):
if self.file and self.is_tty():
width = len(line)
if width < self._max_width:
# Add padding to cover previous contents
line += ' ' * (self._max_width - width)
else:
self._max_width = width
print('\r' + line, end='', file=self.file)
self.file.flush()
def finish(self):
if self.file and self.is_tty():
print(file=self.file)
if self._hidden_cursor:
print(SHOW_CURSOR, end='', file=self.file)
self._hidden_cursor = False
def is_tty(self):
try:
return self.file.isatty() if self.check_tty else True
except AttributeError:
msg = "%s has no attribute 'isatty'. Try setting check_tty=False." % self
raise AttributeError(msg)
def next(self, n=1):
now = monotonic()
dt = now - self._ts
self.update_avg(n, dt)
self._ts = now
self.index = self.index + n
self.update()
def iter(self, it):
self.iter_value = None
with self:
for x in it:
self.iter_value = x
yield x
self.next()
del self.iter_value
def __enter__(self):
self.start()
return self
def __exit__(self, exc_type, exc_val, exc_tb):
self.finish()
class Progress(Infinite):
def __init__(self, *args, **kwargs):
super(Progress, self).__init__(*args, **kwargs)
self.max = kwargs.get('max', 100)
@property
def eta(self):
return int(ceil(self.avg * self.remaining))
@property
def eta_td(self):
return timedelta(seconds=self.eta)
@property
def percent(self):
return self.progress * 100
@property
def progress(self):
if self.max == 0:
return 0
return min(1, self.index / self.max)
@property
def remaining(self):
return max(self.max - self.index, 0)
def start(self):
self.update()
def goto(self, index):
incr = index - self.index
self.next(incr)
def iter(self, it):
try:
self.max = len(it)
except TypeError:
pass
self.iter_value = None
with self:
for x in it:
self.iter_value = x
yield x
self.next()
del self.iter_value
|