Python unicode popen或Popen错误读取unicode(Python unicode popen or Popen error reading unicode)

我有一个生成以下输出的程序：

┌───────────────────────┐ │10 day weather forecast│ └───────────────────────┘ ▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ Tonight Sep 27 Clear 54 0 % Tue Sep 28 Sunny 85/61 0 % Wed Sep 29 Sunny 86/62 0 % Thu Sep 30 Sunny 87/65 0 % Fri Oct 01 Sunny 85/62 0 % Sat Oct 02 Sunny 81/59 0 % Sun Oct 03 Sunny 79/56 0 % Mon Oct 04 Sunny 78/58 0 % Tue Oct 05 Sunny 81/61 0 % Wed Oct 06 Sunny 81/61 0 % Last Updated Sep 27 10:20 p.m. CT ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔

这似乎没有在此站点上格式化，但顶部的下部行和底部的上部行导致unicode错误。

这是os.popen的代码示例

>>> buffer = popen('10day', 'r').read() Traceback (most recent call last): File "/home/woodnt/python/10_day_forecast.py", line 129, in <module> line_lower(51) File "/home/woodnt/python/lib/box.py", line 24, in line_lower print upper_line * len UnicodeEncodeError: 'ascii' codec can't encode characters in position 0-50: ordinal not in range(128) >>> print buffer ┌───────────────────────┐ │10 day weather forecast│ └───────────────────────┘ >>>

这与subprocess.Popen相同：

f = Popen('10day', stdout=PIPE, stdin=PIPE, stderr=PIPE) o, er = f.communicate() print o ┌───────────────────────┐ │10 day weather forecast│ └───────────────────────┘ print er Traceback (most recent call last): File "/home/woodnt/python/10_day_forecast.py", line 129, in <module> line_lower(51) File "/home/woodnt/python/lib/box.py", line 24, in line_lower print upper_line * len UnicodeEncodeError: 'ascii' codec can't encode characters in position 0-50: ordinal not in range(128)

任何想法，如果这可以在没有很多“幕后”工作的情况下工作？我只是在学习编程并从python开始

I have a program that generates the following output:

┌───────────────────────┐ │10 day weather forecast│ └───────────────────────┘ ▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ Tonight Sep 27 Clear 54 0 % Tue Sep 28 Sunny 85/61 0 % Wed Sep 29 Sunny 86/62 0 % Thu Sep 30 Sunny 87/65 0 % Fri Oct 01 Sunny 85/62 0 % Sat Oct 02 Sunny 81/59 0 % Sun Oct 03 Sunny 79/56 0 % Mon Oct 04 Sunny 78/58 0 % Tue Oct 05 Sunny 81/61 0 % Wed Oct 06 Sunny 81/61 0 % Last Updated Sep 27 10:20 p.m. CT ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔

This doesn't seem to format right on this site, but the lower lines at the top and the upper lines at the bottom result in a unicode error.

Here is the code example for os.popen

>>> buffer = popen('10day', 'r').read() Traceback (most recent call last): File "/home/woodnt/python/10_day_forecast.py", line 129, in <module> line_lower(51) File "/home/woodnt/python/lib/box.py", line 24, in line_lower print upper_line * len UnicodeEncodeError: 'ascii' codec can't encode characters in position 0-50: ordinal not in range(128) >>> print buffer ┌───────────────────────┐ │10 day weather forecast│ └───────────────────────┘ >>>

Here is the same for subprocess.Popen:

f = Popen('10day', stdout=PIPE, stdin=PIPE, stderr=PIPE) o, er = f.communicate() print o ┌───────────────────────┐ │10 day weather forecast│ └───────────────────────┘ print er Traceback (most recent call last): File "/home/woodnt/python/10_day_forecast.py", line 129, in <module> line_lower(51) File "/home/woodnt/python/lib/box.py", line 24, in line_lower print upper_line * len UnicodeEncodeError: 'ascii' codec can't encode characters in position 0-50: ordinal not in range(128)

Any ideas if this can be made to work without a lot of "under the hood" work? I'm just learning programming and starting with python

最满意答案

我说从控制台运行你的程序应该正常工作，因为Python可以猜测终端窗口的控制台编码（美国Windows上的cp437），但是当通过管道运行时，Python使用默认的ascii。尝试更改程序以将所有Unicode输出编码为显式编码，例如：

print（upper_line * len）.encode（'cp437'）

然后，当您从管道中读取它时，您可以decode回Unicode或直接将其打印到终端。

I'd say running your program from the console should work correctly because Python can guess the console encoding of the terminal window (cp437 on US Windows), but when run through a pipe Python uses the default of ascii. Try changing your program to encode all Unicode output to an explicit encoding, such as:

print (upper_line * len).encode('cp437')

Then when you read it from the pipe, you can either decode back to Unicode or print it directly to the terminal.

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