小编dav*_*puh的帖子

如何制作python 3 print()utf8

如何print("Some text")在UTF-8中使用python 3(3.1)到stdout,或者如何输出原始字节？

Test.py

TestText = "Test - ??????..šŠ??žŽ" # this is UTF-8
TestText2 = b"Test2 - \xc4\x81\xc4\x80\xc4\x93\xc4\x92\xc4\x8d\xc4\x8c..\xc5\xa1\xc5\xa0\xc5\xab\xc5\xaa\xc5\xbe\xc5\xbd" # just bytes
print(sys.getdefaultencoding())
print(sys.stdout.encoding)
print(TestText)
print(TestText.encode("utf8"))
print(TestText.encode("cp1252","replace"))
print(TestText2)

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输出(在CP1257和I中将字符替换为字节值[x00]):

utf-8
cp1257
Test - [xE2][xC2][xE7][C7][xE8][xC8]..[xF0][xD0][xFB][xDB][xFE][xDE]  
b'Test - \xc4\x81\xc4\x80\xc4\x93\xc4\x92\xc4\x8d\xc4\x8c..\xc5\xa1\xc5\xa0\xc5\xab\xc5\xaa\xc5\xbe\xc5\xbd'
b'Test - ??????..\x9a\x8a??\x9e\x8e'
b'Test2 - \xc4\x81\xc4\x80\xc4\x93\xc4\x92\xc4\x8d\xc4\x8c..\xc5\xa1\xc5\xa0\xc5\xab\xc5\xaa\xc5\xbe\xc5\xbd'

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print太聪明了......:D使用编码文本是没有意义的print(因为它总是只显示字节的表示而不是实际字节)并且根本不可能输出字节,因为无论如何打印并始终对其进行编码sys.stdout.encoding.

例如:print(chr(255))抛出错误:

Traceback (most recent call last):
  File "Test.py", line 1, in <module>
    print(chr(255));
  File "H:\Python31\lib\encodings\cp1257.py", line 19, in encode
    return codecs.charmap_encode(input,self.errors,encoding_table)[0]
UnicodeEncodeError: 'charmap' codec can't encode …

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unicode encoding stdout utf-8 python-3.x

dav*_*puh

2017 03-15

43
推荐指数

3
解决办法

6万
查看次数

创建交互式ruby控制台应用程序

我想制作用户启动它的交互式应用程序,并可以通过键入命令(某种shell)来完成各种任务

例:

./myapp.rb  
App says Hi  
Commands:   
  help - display help about command
  open - open task
  do - do action
Start>help open
  open <TaskName>
  opens specified task
Start>open Something  
Something>do SomeAction
  Success!
Something> (blinking cursor here)

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我搜索但找不到任何我可以专门用于控制台互动的红宝石宝石,所以我要自己制作...

我看着托尔,但那不是我想要的,也许我可以用它,但不确定......

它可能看起来像:

class Tasks
  attr_reader :opened_task

  desc "open <TaskName>", "opens specified task"
  def open(params)
  end

  desc "do <ActionName>", "do specified action"
  def do(params)
  end
end

tasks = Tasks.new
# theoretical Console class
console = Console.new
console.addCommand("open",tasks.method(:open),"open task")
console.addCommand("do",tasks.method(:do),"do action")
console.start("%s>",[*tasks.opened_task]) …

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ruby console interactive

dav*_*puh

2012 03-25

14
推荐指数

4
解决办法

2万
查看次数