是否可以在 ipython 的 Notebook 中使用不同颜色进行打印？
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Is it possible to print using different colors in ipython's Notebook?
提问by Rabarberski
Is it somehow possible to have certain output appear in a different color in the IPython Notebook? For example, something along the lines of:
是否有可能在 IPython Notebook 中以不同的颜色显示某些输出？例如，类似于以下内容：
print("Hello Red World", color='red')
采纳答案by Matt
The notebook has, of course, its own syntax highlighting. So I would be careful when using colour elsewhere, just to avoid making things harder to read for yourself or someone else (e.g., output should simply be in black, but you get parts in red if there is an exception).
当然，笔记本有自己的语法突出显示。所以在其他地方使用颜色时我会小心，只是为了避免让自己或其他人更难阅读（例如，输出应该只是黑色，但如果有例外，你会得到红色部分）。
But (to my surprise), it appears that you can use ANSI escape codes (even in the browser). At least, I could:
但是（令我惊讶），您似乎可以使用 ANSI 转义码（即使在浏览器中）。至少，我可以：
On the default Python prompt:
在默认的 Python 提示符下：
>>> print("\x1b[31m\"red\"\x1b[0m")
"red"
In the notebook:
在笔记本中：
In [28]: print("\x1b[31m\"red\"\x1b[0m")
"red"
(Obviously, I cheated here with the syntax highlighting of SO so that "red" is printed in the colour red in both examples. I don't think SO allows a user to set a colour for text.)
（显然，我在这里用 SO 的语法突出显示作弊，以便在两个示例中都以红色打印“红色”。我认为 SO 不允许用户为文本设置颜色。）
I wouldn't really know another way to get colours.
我真的不知道另一种获得颜色的方法。
For more on ANSI escape codes, I'd suggest the Wikipedia article. And if you find the above to verbose, you can of course write a wrapper function around this.
有关 ANSI 转义码的更多信息，我建议阅读维基百科文章。如果你发现上面的内容很冗长，你当然可以围绕它编写一个包装函数。
回答by Matt
Not with raw Python print. You will have to define a _repr_html_on an object and return it or call IPython.lib.display(object_with_repr_html).
不适用于原始 Python 打印。您必须_repr_html_在对象上定义 a并返回它或调用IPython.lib.display(object_with_repr_html)。
I guess you could overwrite the built-in print to do it automatically...
我想您可以覆盖内置打印以自动执行...
You could inspire from http://nbviewer.ipython.org/5098827, code in a gist on github, ML discussion here.
您可以从http://nbviewer.ipython.org/5098827、github上的要点中的代码、此处的ML 讨论中获得启发。
回答by alvas
Here's a quick hack:
这是一个快速的黑客：
from IPython.display import HTML as html_print
def cstr(s, color='black'):
return "<text style=color:{}>{}</text>".format(color, s)
left, word, right = 'foo' , 'abc' , 'bar'
html_print(cstr(' '.join([left, cstr(word, color='red'), right]), color='black') )
[out]:
[出去]：
If you just want a single color: html_print(cstr('abc', 'red'))
如果你只想要一种颜色： html_print(cstr('abc', 'red'))
回答by anand tripathi
You can use this library termcolorand you can get all other official libraries of python in PyPi
您可以使用这个库termcolor并且您可以在 PyPi 中获取所有其他官方 Python 库
See the documentation in pypi.python.org or follow these steps
请参阅 pypi.python.org 中的文档或按照以下步骤操作
- pip install termcolor
- then goto ipython
- pip 安装 termcolor
- 然后转到 ipython
Code
代码
from termcolor import colored
print(colored('hello', 'red'), colored('world', 'green'))
print(colored("hello red world", 'red'))
Output:
输出：
hello world
hello red world
The first argument is what you want to print on console and second argument use that color
第一个参数是您要在控制台上打印的内容，第二个参数使用该颜色
回答by Roei Bahumi
Using @Evert answer, here is a method that would wrap a list of tokens in red and return a highlighted string
使用@Evert 答案，这里有一种方法可以将标记列表包装为红色并返回突出显示的字符串
def color_in_tokens(tokens, color_token_contains="_"):
"""
Highlights the tokens which contain 'color_token_contains'
:param tokens: list of strings
:param color_token_contains: str (the string for marking a token red)
:return: str
"""
return " ".join(["\x1b[31m%s\x1b[0m" % i if color_token_contains in i else i for i in tokens])
Just call print on the returned string:
只需在返回的字符串上调用 print ：
回答by Kourosh Meshgi
Similar to what @alvas mentioned but simpler
类似于@alvas 提到的但更简单
from IPython.display import Markdown
display (Markdown('this is in <span style="color: #ff0000">red</span> color.'))
回答by Zags
There is the colored library(pip install colored), which you can use to modify a string to get color codes to modify how it is printed. Example use:
有彩色库( pip install colored)，您可以使用它来修改字符串以获取颜色代码以修改其打印方式。使用示例：
import colored
print(colored.bg("white") + colored.fg("red") + "Hello world!")
回答by geekazoid
回答by miki
Thanks to @alvas function and adding another function we get a very simple way to print
感谢@alvas 函数并添加另一个函数，我们得到了一种非常简单的打印方式
from IPython.display import HTML as html_print
from IPython.display import display
def cstr(s, color='black'):
return "<text style=color:{}>{}</text>".format(color, s)
def print_color(t):
display(html_print(' '.join([cstr(ti, color=ci) for ti,ci in t])))
print_color((('hello my name is', 'black'),('jhjfd','red')))
print_color((('hello my name is', 'green'),))
