我的进度条达到100%,然后出现错误。
from progressbar import Percentage, ProgressBar,Bar,ETA
pbar = ProgressBar(widgets=[Bar('=', '[', ']'), ' ',
Percentage(), ' ',
ETA()]).start()
for i,row in enumerate(cursor):
'''
do some work here
'''
pbar.update(i)
这是我得到的内容
Traceback (most recent call last):=========================] 100% ETA: 0:00:00
File "X:\src\dbtest\PymssqlCheck.py", line 27, in <module>
fiddler.getRows(condetails, dbdetails, 'compliance', 'doctable', '*', '1000')
File "X:\src\utilities\fiddler.py", line 45, in getRows
pbar.update(i)
File "X:\Anaconda2\lib\site-packages\progressbar\__init__.py", line 271, in update
raise ValueError('Value out of range')
ValueError: Value out of range
为什么进度条会到达100%然后失败?我正在使用 https://github.com/niltonvolpato/python-progressbar。我甚至尝试了其他方法。
i=0
for row in cursor:
''' do some work here '''
if i < numrows:
pbar.update(i)
i=i+1
但我仍然遇到了相同的错误。
编辑
我尝试了Tomasz Jakub Rup的答案。
pbar = ProgressBar(widgets=[Bar('=', '[', ']'), ' ',
Percentage(), ' ',
ETA()])
for row in pbar(cursor):
''' do some work here '''
而我获得
File "X:\fiddler.py", line 41, in getRows
for row in pbar(cursor):
File "X:\Anaconda2\lib\site-packages\progressbar\__init__.py", line 180, in __next__
if self.start_time is None: self.start()
File "X:\Anaconda2\lib\site-packages\progressbar\__init__.py", line 311, in start
self.update(0)
File "X:\Anaconda2\lib\site-packages\progressbar\__init__.py", line 283, in update
self.fd.write(self._format_line() + '\r')
File "X:\Anaconda2\lib\site-packages\progressbar\__init__.py", line 243, in _format_line
widgets = ''.join(self._format_widgets())
File "X:\Anaconda2\lib\site-packages\progressbar\__init__.py", line 223, in _format_widgets
widget = format_updatable(widget, self)
File "X:\Anaconda2\lib\site-packages\progressbar\widgets.py", line 38, in format_updatable
if hasattr(updatable, 'update'): return updatable.update(pbar)
File "X:\Anaconda2\lib\site-packages\progressbar\widgets.py", line 184, in update
return '%3d%%' % pbar.percentage()
File "X:\Anaconda2\lib\site-packages\progressbar\__init__.py", line 208, in percentage
return self.currval * 100.0 / self.maxval
TypeError: unsupported operand type(s) for /: 'float' and 'classobj'
有什么想法吗?