Python进度条
当我的脚本正在执行一些可能需要时间的任务时,如何使用进度条 例如,一个函数需要一些时间才能完成,完成后返回Python进度条,python,Python,当我的脚本正在执行一些可能需要时间的任务时,如何使用进度条 例如,一个函数需要一些时间才能完成,完成后返回True。在执行函数期间,如何显示进度条 请注意,我需要这是实时的,所以我不知道该怎么办。我需要一个线程来执行此操作吗?我不知道 现在我没有打印任何东西,而函数正在执行,但是一个进度条会很好。另外,我更感兴趣的是如何从代码的角度做到这一点。有一些特定的库(),但也许可以做一些非常简单的事情: import time import sys toolbar_width = 40 # setu
True
。在执行函数期间,如何显示进度条
请注意,我需要这是实时的,所以我不知道该怎么办。我需要一个线程来执行此操作吗?我不知道
现在我没有打印任何东西,而函数正在执行,但是一个进度条会很好。另外,我更感兴趣的是如何从代码的角度做到这一点。有一些特定的库(),但也许可以做一些非常简单的事情:
import time
import sys
toolbar_width = 40
# setup toolbar
sys.stdout.write("[%s]" % (" " * toolbar_width))
sys.stdout.flush()
sys.stdout.write("\b" * (toolbar_width+1)) # return to start of line, after '['
for i in xrange(toolbar_width):
time.sleep(0.1) # do real work here
# update the bar
sys.stdout.write("-")
sys.stdout.flush()
sys.stdout.write("]\n") # this ends the progress bar
注意:是一个已经多年没有维护过的分支。如果您的工作无法分解为可测量的块,您可以在新线程中调用函数,以及调用所需的时间:
import thread
import time
import sys
def work():
time.sleep( 5 )
def locked_call( func, lock ):
lock.acquire()
func()
lock.release()
lock = thread.allocate_lock()
thread.start_new_thread( locked_call, ( work, lock, ) )
# This part is icky...
while( not lock.locked() ):
time.sleep( 0.1 )
while( lock.locked() ):
sys.stdout.write( "*" )
sys.stdout.flush()
time.sleep( 1 )
print "\nWork Done"
您可以根据需要明显提高计时精度。您应该将进度条链接到手头的任务(以便它测量进度:D)。例如,如果您正在FTPing一个文件,您可以告诉ftplib获取一个特定大小的缓冲区,比如128K,然后将128K文件大小的百分比添加到进度条中。如果您正在使用CLI,并且进度表的长度为20个字符,则在传输文件的1/20时,您可以添加一个字符。使用此库:()
用法:
>>> import fish
>>> while churning:
... churn_churn()
... fish.animate()
Computing: [################........................] 4/15
玩得开心 对于类似的应用程序(在循环中跟踪进度),我只使用了:
他们的例子是这样的
from progressbar import * # just a simple progress bar
widgets = ['Test: ', Percentage(), ' ', Bar(marker='0',left='[',right=']'),
' ', ETA(), ' ', FileTransferSpeed()] #see docs for other options
pbar = ProgressBar(widgets=widgets, maxval=500)
pbar.start()
for i in range(100,500+1,50):
# here do something long at each iteration
pbar.update(i) #this adds a little symbol at each iteration
pbar.finish()
print
上面的建议很好,但我认为大多数人只是想要一个现成的解决方案,不依赖于外部包,而且是可重用的
我得到了以上所有优点,并将其与测试用例一起制作成一个函数
要使用它,只需复制“def update_progress(progress)”下的行,而不复制测试脚本。不要忘记导入系统。无论何时需要显示或更新进度条,都可以调用此选项
import time
import enlighten
manager = enlighten.Manager()
odds = manager.counter(total=50)
evens = manager.counter(total=50)
for num in range(1, 101):
time.sleep(0.05)
if num % 2:
odds.update()
else:
evens.update()
这是通过直接向控制台发送“\r”符号将光标移回起始位置来实现的。python中的“print”不会为此重新注册上述符号,因此我们需要“sys”
import time, sys
# update_progress() : Displays or updates a console progress bar
## Accepts a float between 0 and 1. Any int will be converted to a float.
## A value under 0 represents a 'halt'.
## A value at 1 or bigger represents 100%
def update_progress(progress):
barLength = 10 # Modify this to change the length of the progress bar
status = ""
if isinstance(progress, int):
progress = float(progress)
if not isinstance(progress, float):
progress = 0
status = "error: progress var must be float\r\n"
if progress < 0:
progress = 0
status = "Halt...\r\n"
if progress >= 1:
progress = 1
status = "Done...\r\n"
block = int(round(barLength*progress))
text = "\rPercent: [{0}] {1}% {2}".format( "#"*block + "-"*(barLength-block), progress*100, status)
sys.stdout.write(text)
sys.stdout.flush()
# update_progress test script
print "progress : 'hello'"
update_progress("hello")
time.sleep(1)
print "progress : 3"
update_progress(3)
time.sleep(1)
print "progress : [23]"
update_progress([23])
time.sleep(1)
print ""
print "progress : -10"
update_progress(-10)
time.sleep(2)
print ""
print "progress : 10"
update_progress(10)
time.sleep(2)
print ""
print "progress : 0->1"
for i in range(101):
time.sleep(0.1)
update_progress(i/100.0)
print ""
print "Test completed"
time.sleep(10)
@马萨格兰:在我的节目中效果很好。此外,我们需要添加一个计数器来指示循环时间。此计数器用作方法update
的参数。
例如:读取测试文件的所有行,并对它们进行处理。假设函数dosth()
与变量i
无关
lines = open(sys.argv[1]).readlines()
i = 0
widgets=[Percentage(), Bar()]
pbar = ProgressBar(widgets=widgets,maxval=len(lines)).start()
pbar.start()
for line in lines:<pre>
dosth();
i += 1
pbar.update(i)</pre>
pbar.finish()
lines=open(sys.argv[1]).readlines()
i=0
小部件=[Percentage(),Bar()]
pbar=ProgressBar(widgets=widgets,maxval=len(行)).start()
pbar.start()
对于行中的行:
from time import sleep
from tqdm import tqdm
for i in tqdm(range(10)):
sleep(3)
60%|██████ | 6/10 [00:18<00:12, 0.33 it/s]
dosth();
i+=1
pbar.update(一)
pbar.finish()
变量i
通过方法update
Try progress from控制pbar
的状态
从progress.bar导入栏
棒材=棒材('加工',最大值=20)
对于范围(20)内的i:
#做些工作
bar.next()
吧台
结果将是如下所示的条形图:
Processing|############|42/100
使用(conda install tqdm
或pip install tqdm
)您可以在一秒钟内将进度表添加到循环中:
from tqdm.notebook import tqdm
for i in tqdm(range(100)):
sleep(3)
您可以使用tqdm.auto
而不是tqdm.notebook
在终端和笔记本电脑中工作
包含一些帮助程序函数,用于执行诸如枚举
、映射
、和压缩
之类的操作。中存在并发映射
您甚至可以在使用或从jupyter笔记本断开连接后将进度发送到手机
我喜欢这个
从简单的示例开始,然后转到多线程版本。开箱即用。不需要第三方软件包
代码将如下所示:
import sys
import time
import threading
class progress_bar_loading(threading.Thread):
def run(self):
global stop
global kill
print 'Loading.... ',
sys.stdout.flush()
i = 0
while stop != True:
if (i%4) == 0:
sys.stdout.write('\b/')
elif (i%4) == 1:
sys.stdout.write('\b-')
elif (i%4) == 2:
sys.stdout.write('\b\\')
elif (i%4) == 3:
sys.stdout.write('\b|')
sys.stdout.flush()
time.sleep(0.2)
i+=1
if kill == True:
print '\b\b\b\b ABORT!',
else:
print '\b\b done!',
kill = False
stop = False
p = progress_bar_loading()
p.start()
try:
#anything you want to run.
time.sleep(1)
stop = True
except KeyboardInterrupt or EOFError:
kill = True
stop = True
import sys
import time
def ProgressBar(Total, Progress, BarLength=20, ProgressIcon="#", BarIcon="-"):
try:
# You can't have a progress bar with zero or negative length.
if BarLength <1:
BarLength = 20
# Use status variable for going to the next line after progress completion.
Status = ""
# Calcuting progress between 0 and 1 for percentage.
Progress = float(Progress) / float(Total)
# Doing this conditions at final progressing.
if Progress >= 1.:
Progress = 1
Status = "\r\n" # Going to the next line
# Calculating how many places should be filled
Block = int(round(BarLength * Progress))
# Show this
Bar = "[{}] {:.0f}% {}".format(ProgressIcon * Block + BarIcon * (BarLength - Block), round(Progress * 100, 0), Status)
return Bar
except:
return "ERROR"
def ShowBar(Bar):
sys.stdout.write(Bar)
sys.stdout.flush()
if __name__ == '__main__':
print("This is a simple progress bar.\n")
# Example #1:
print('Example #1')
Runs = 10
for i in range(Runs + 1):
progressBar = "\rProgress: " + ProgressBar(10, i, Runs)
ShowBar(progressBar)
time.sleep(1)
# Example #2:
print('\nExample #2')
Runs = 10
for i in range(Runs + 1):
progressBar = "\rProgress: " + ProgressBar(10, i, 20, '|', '.')
ShowBar(progressBar)
time.sleep(1)
print('\nDone.')
# Example #2:
Runs = 10
for i in range(Runs + 1):
ProgressBar(10, i)
time.sleep(1)
import sys, time
from numpy import linspace
def ProgressBar(iterObj):
def SecToStr(sec):
m, s = divmod(sec, 60)
h, m = divmod(m, 60)
return u'%d:%02d:%02d'%(h, m, s)
L = len(iterObj)
steps = {int(x):y for x,y in zip(linspace(0, L, min(100,L), endpoint=False),
linspace(0, 100, min(100,L), endpoint=False))}
qSteps = ['', u'\u258E', u'\u258C', u'\u258A'] # quarter and half block chars
startT = time.time()
timeStr = ' [0:00:00, -:--:--]'
activity = [' -',' \\',' |',' /']
for nn,item in enumerate(iterObj):
if nn in steps:
done = u'\u2588'*int(steps[nn]/4.0)+qSteps[int(steps[nn]%4)]
todo = ' '*(25-len(done))
barStr = u'%4d%% |%s%s|'%(steps[nn], done, todo)
if nn>0:
endT = time.time()
timeStr = ' [%s, %s]'%(SecToStr(endT-startT),
SecToStr((endT-startT)*(L/float(nn)-1)))
sys.stdout.write('\r'+barStr+activity[nn%4]+timeStr); sys.stdout.flush()
yield item
barStr = u'%4d%% |%s|'%(100, u'\u2588'*25)
timeStr = ' [%s, 0:00:00]\n'%(SecToStr(time.time()-startT))
sys.stdout.write('\r'+barStr+timeStr); sys.stdout.flush()
# Example
s = ''
for c in ProgressBar(list('Disassemble and reassemble this string')):
time.sleep(0.2)
s += c
print(s)
pip install alive-progress
或者,下面是使用线程在程序运行时运行旋转加载条的示例:
import sys
def progressbar(it, prefix="", size=60, file=sys.stdout):
count = len(it)
def show(j):
x = int(size*j/count)
file.write("%s[%s%s] %i/%i\r" % (prefix, "#"*x, "."*(size-x), j, count))
file.flush()
show(0)
for i, item in enumerate(it):
yield item
show(i+1)
file.write("\n")
file.flush()
我真的很喜欢,因为它使用起来很简单
最简单的情况是:
导入进度条
导入时间
progress=progressbar.progressbar()
对于正在进行的i(范围(80)):
睡眠时间(0.01)
可以自定义外观,并显示估计的剩余时间。例如,使用与上述相同的代码,但带有:
progress=progressbar.progressbar(小部件=[progressbar.Bar('=','[',']'),'',
progressbar.Percentage(),“”,
progressbar.ETA())
这个答案并不依赖于外部软件包,我还认为大多数人只需要一段现成的代码。下面的代码可以通过自定义进行调整以满足您的需要:条形进度符号“#”
、条形大小
、文本前缀
等
import time
for i in progressbar(range(15), "Computing: ", 40):
time.sleep(0.1) # any calculation you need
用法:
>>> import fish
>>> while churning:
... churn_churn()
... fish.animate()
Computing: [################........................] 4/15
输出:
import time
n = 33 # or however many loading slots you want to have
load = 0.01 # artificial loading time!
loading = '.' * n # for strings, * is the repeat operator
for i in range(n+1):
# this loop replaces each dot with a hash!
print('\r%s Loading at %3d percent!' % (loading, i*100/n), end='')
loading = loading[:i] + '#' + loading[i+1:]
time.sleep(load)
pip install progress
- 不需要第二个线程。上述一些解决方案/包需要
- 适用于任何iterable它意味着任何
len()
可以在其上使用的内容。一个列表
,一个记录
任何事物,例如['A','b','c','g']
- 使用生成器只需使用列表()将其包装即可。例如,progressbar中的i(列表(您的_生成器),“计算:”,40):
,除非工作在生成器中完成。在这种情况下,您需要另一种解决方案(如TQM)
您还可以通过将文件更改为
sys.stderr
来更改输出,例如这里有一个简短的解决方案,它以编程方式构建加载栏(您必须决定需要多长时间)
在这里搜索了一个等价的解决方案之后,我刚刚根据自己的需要制作了一个简单的进度类。我想我可以把它贴出来
from time import sleep
progress = ProgressBar(80, fmt=ProgressBar.FULL)
for x in xrange(progress.total):
progress.current += 1
progress()
sleep(0.1)
progress.done()
将打印以下内容:
[==
for i in range(0,100):
loadingBar(i,100,2)
#do some code
i = 50
>> 050/100 [========== ]
import pyprog
from time import sleep
# Create Object
prog = pyprog.ProgressBar(" ", "", 34)
# Update Progress Bar
prog.update()
for i in range(34):
# Do something
sleep(0.1)
# Set current status
prog.set_stat(i + 1)
# Update Progress Bar again
prog.update()
# Make the Progress Bar final
prog.end()
Initial State:
Progress: 0% --------------------------------------------------
When half done:
Progress: 50% #########################-------------------------
Final State:
Progress: 100% ##################################################
18% |████▌ | \ [0:00:01, 0:00:06]
import sys, time
from numpy import linspace
def ProgressBar(iterObj):
def SecToStr(sec):
m, s = divmod(sec, 60)
h, m = divmod(m, 60)
return u'%d:%02d:%02d'%(h, m, s)
L = len(iterObj)
steps = {int(x):y for x,y in zip(linspace(0, L, min(100,L), endpoint=False),
linspace(0, 100, min(100,L), endpoint=False))}
qSteps = ['', u'\u258E', u'\u258C', u'\u258A'] # quarter and half block chars
startT = time.time()
timeStr = ' [0:00:00, -:--:--]'
activity = [' -',' \\',' |',' /']
for nn,item in enumerate(iterObj):
if nn in steps:
done = u'\u2588'*int(steps[nn]/4.0)+qSteps[int(steps[nn]%4)]
todo = ' '*(25-len(done))
barStr = u'%4d%% |%s%s|'%(steps[nn], done, todo)
if nn>0:
endT = time.time()
timeStr = ' [%s, %s]'%(SecToStr(endT-startT),
SecToStr((endT-startT)*(L/float(nn)-1)))
sys.stdout.write('\r'+barStr+activity[nn%4]+timeStr); sys.stdout.flush()
yield item
barStr = u'%4d%% |%s|'%(100, u'\u2588'*25)
timeStr = ' [%s, 0:00:00]\n'%(SecToStr(time.time()-startT))
sys.stdout.write('\r'+barStr+timeStr); sys.stdout.flush()
# Example
s = ''
for c in ProgressBar(list('Disassemble and reassemble this string')):
time.sleep(0.2)
s += c
print(s)
import time
import math
def show_progress_bar(bar_length, completed, total):
bar_length_unit_value = (total / bar_length)
completed_bar_part = math.ceil(completed / bar_length_unit_value)
progress = "*" * completed_bar_part
remaining = " " * (bar_length - completed_bar_part)
percent_done = "%.2f" % ((completed / total) * 100)
print(f'[{progress}{remaining}] {percent_done}%', end='\r')
bar_length = 30
total = 100
for i in range(0, total + 1):
show_progress_bar(bar_length, i, total)
time.sleep(0.1)
print('\n')
import time
import enlighten
manager = enlighten.Manager()
pbar = manager.counter(total=100)
for num in range(1, 101):
time.sleep(0.05)
print('Step %d complete' % num)
pbar.update()
import time
import enlighten
manager = enlighten.Manager()
odds = manager.counter(total=50)
evens = manager.counter(total=50)
for num in range(1, 101):
time.sleep(0.05)
if num % 2:
odds.update()
else:
evens.update()
import time
from tqdm import tqdm_notebook as tqdm
for i in tqdm(range(100))
time.sleep(0.5)
import sys
from math import *
def loadingBar(i, N, size):
percent = float(i) / float(N)
sys.stdout.write("\r"
+ str(int(i)).rjust(3, '0')
+"/"
+str(int(N)).rjust(3, '0')
+ ' ['
+ '='*ceil(percent*size)
+ ' '*floor((1-percent)*size)
+ ']')
loadingBar(7, 220, 40)
007/220 [= ]
from numpy import interp
class Progress:
def __init__(self, value, end, title='Downloading',buffer=20):
self.title = title
#when calling in a for loop it doesn't include the last number
self.end = end -1
self.buffer = buffer
self.value = value
self.progress()
def progress(self):
maped = int(interp(self.value, [0, self.end], [0, self.buffer]))
print(f'{self.title}: [{"#"*maped}{"-"*(self.buffer - maped)}]{self.value}/{self.end} {((self.value/self.end)*100):.2f}%', end='\r')
#some loop that does perfroms a task
for x in range(21) #set to 21 to include until 20
Progress(x, 21)
Downloading: [########------------] 8/20 40.00%
from tqdm import tqdm
with tqdm(total=100, desc="Adding Users", bar_format="{l_bar}{bar} [ time left: {remaining} ]") as pbar:
for i in range(100):
time.sleep(3)
pbar.update(1)
Adding Users: 3%|█████▊ [ time left: 04:51 ]
def compute():
for i in range(1000):
... # process an item
yield # insert this and you're done!
pip install alive-progress
from alive_progress import alive_bar
with alive_bar(1000) as bar:
for i in compute():
bar()
|█████████████▎ | ▅▃▁ 321/1000 [32%] in 8s (40.1/s, eta: 16s)
import time
loadbarwidth = 23
for i in range(1, loadbarwidth + 1):
time.sleep(0.1)
strbarwidth = '[{}{}] - {}\r'.format(
(i * '#'),
((loadbarwidth - i) * '-'),
(('{:0.2f}'.format(((i) * (100/loadbarwidth))) + '%'))
)
print(strbarwidth ,end = '')
print()
[#######################] - 100.00%
pip install progress
import datetime
from progress.bar import IncrementalBar
class ProgressBar(IncrementalBar):
'''
My custom progress bar that:
- Show %, count, elapsed, eta
- Time is shown in H:M:S format
'''
message = 'Progress'
suffix = '%(percent).1f%% (%(index)d/%(max)d) -- %(elapsed_min)s (eta: %(eta_min)s)'
def formatTime(self, seconds):
return str(datetime.timedelta(seconds=seconds))
@property
def elapsed_min(self):
return self.formatTime(self.elapsed)
@property
def eta_min(self):
return self.formatTime(self.eta)
if __name__=='__main__':
counter = 120
bar = ProgressBar('Processing', max=counter)
for i in range(counter):
bar.next()
time.sleep(1)
bar.finish()
import time
def progress(_cur, _max):
p = round(100*_cur/_max)
b = f"Progress: {p}% - ["+"."*int(p/5)+" "*(20-int(p/5))+"]"
print(b, end="\r")
# USAGE:
for i in range(0,101):
time.sleep(0.1)
progress(i,100)
print("..."*5, end="\r")
print("Done")
def progbar(count: int) -> None:
for i in range(count):
print(f"[{i*'#'}{(count-1-i)*' '}] - {i+1}/{count}", end="\r")
yield i
print('\n')
from time import sleep
for i in progbar(10):
sleep(0.2) #whatever task you need to do