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如何在python中打印百分比值？

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问题：如何在python中打印百分比值？
回答 0
回答 1
回答 2
回答 3
回答 4
回答 5

问题：如何在python中打印百分比值？

这是我的代码：

print str(float(1/3))+'%'

它显示：

0.0%

但我想得到 33%

我能做什么？

点击查看英文原文

this is my code:

print str(float(1/3))+'%'

and it shows:

0.0%

but I want to get 33%

What can I do?

回答 0

format支持百分比浮点精度类型：

>>> print "{0:.0%}".format(1./3)
33%

如果您不希望整数除法，则可以从导入Python3的除法__future__：

>>> from __future__ import division
>>> 1 / 3
0.3333333333333333

# The above 33% example would could now be written without the explicit
# float conversion:
>>> print "{0:.0f}%".format(1/3 * 100)
33%

# Or even shorter using the format mini language:
>>> print "{:.0%}".format(1/3)
33%
点击查看英文原文

format supports a percentage floating point precision type:

>>> print "{0:.0%}".format(1./3)
33%

If you don’t want integer division, you can import Python3’s division from __future__:

>>> from __future__ import division
>>> 1 / 3
0.3333333333333333

# The above 33% example would could now be written without the explicit
# float conversion:
>>> print "{0:.0f}%".format(1/3 * 100)
33%

# Or even shorter using the format mini language:
>>> print "{:.0%}".format(1/3)
33%

回答 1

格式化方法有一种更方便的“百分比”格式化选项.format()：

>>> '{:.1%}'.format(1/3.0)
'33.3%'
点击查看英文原文

There is a way more convenient ‘percent’-formatting option for the .format() format method:

>>> '{:.1%}'.format(1/3.0)
'33.3%'

回答 2

只是为了完整起见，因为我注意到没有人建议这种简单的方法：

>>> print("%.0f%%" % (100 * 1.0/3))
33%

细节：

  • %.0f代表“ 打印带有0个小数位的浮点数 ”，因此%.2f将打印33.33
  • %%打印文字%。比原来的要干净一点+'%'
  • 1.0而不是1强迫分部浮动，所以不再0.0
点击查看英文原文

Just for the sake of completeness, since I noticed no one suggested this simple approach:

>>> print("%.0f%%" % (100 * 1.0/3))
33%

Details:

  • %.0f stands for “print a float with 0 decimal places“, so %.2f would print 33.33
  • %% prints a literal %. A bit cleaner than your original +'%'
  • 1.0 instead of 1 takes care of coercing the division to float, so no more 0.0

回答 3

您将整数相除，然后转换为浮点数。除以浮点数代替。

另外，请使用此处描述的很棒的字符串格式化方法：http : //docs.python.org/library/string.html#format-specification-mini-language

指定转换百分比和精度。

>>> float(1) / float(3)
[Out] 0.33333333333333331

>>> 1.0/3.0
[Out] 0.33333333333333331

>>> '{0:.0%}'.format(1.0/3.0) # use string formatting to specify precision
[Out] '33%'

>>> '{percent:.2%}'.format(percent=1.0/3.0)
[Out] '33.33%'

一个伟大的宝石！

点击查看英文原文

You are dividing integers then converting to float. Divide by floats instead.

As a bonus, use the awesome string formatting methods described here: http://docs.python.org/library/string.html#format-specification-mini-language

To specify a percent conversion and precision.

>>> float(1) / float(3)
[Out] 0.33333333333333331

>>> 1.0/3.0
[Out] 0.33333333333333331

>>> '{0:.0%}'.format(1.0/3.0) # use string formatting to specify precision
[Out] '33%'

>>> '{percent:.2%}'.format(percent=1.0/3.0)
[Out] '33.33%'

A great gem!

回答 4

只是添加Python 3 f字符串解决方案

prob = 1.0/3.0
print(f"{prob:.0%}")
点击查看英文原文

Just to add Python 3 f-string solution

prob = 1.0/3.0
print(f"{prob:.0%}")

回答 5

然后，您想这样做：

print str(int(1.0/3.0*100))+'%'

在.0表示他们的花车和int()事后再发他们的整数。

点击查看英文原文

Then you’d want to do this instead:

print str(int(1.0/3.0*100))+'%'

The .0 denotes them as floats and int() rounds them to integers afterwards again.