The question is straightforward, is it possible to change the font family of text in a Python print() output? Like Times New Roman, Arial, or Comic Sans?
I only want to change some of the output. Not all of the text like in this question.
I'm using Python 3 and Jupyter Notebook on a Mac.
I know it's possible to make certain text bold like so:
bold_start = '\033[1m'
bold_end = '\033[0m'
print(bold_start, "Hello", bold_end, "World")
This outputs "Hello World" instead of "Hello World" or "Hello World"
Python strings are just strings of Unicode characters, they don't say anything about font one way or another. The font is determined by whatever is rendering the characters, e.g. the terminal program you're using, or the browser you're using. The print function just spits out the resulting string.
As you pointed out, if you're in a terminal that understands those escape sequences, then you can use those to affect the output. If your output is a web page, then you can embed html code to specify whatever you like, but all the python interpreter sees is a string of characters, not a string of characters in any particular font.
How to highlight a word/letter in a text by changing its color\colour using python 2.7?
try:
using clint.
>>> from clint.textui import puts, colored
>>> puts(colored.red('Text in Red'))
Text in Red
but i want to color only the 'x' in the 'Text' for example.
import termcolor
string = 'Text in Red'
string = string.replace('x', termcolor.colored('x', 'red'))
print string
The following will work.
>>> from clint.textui import puts, colored
>>> puts('Te'+colored.red('x')+'t in Red')
Let me explain why this works by first explaining how colors are displayed in the console.
When you want to tell the console to change colors you would think you would have to do some special system call or something, but all you have to do is output some special characters called an ansi escape sequence. Clint handles this for you. When you used the clint.ansi.red function, the escape character for red was added before the x and the escape character to reset everything back to normal was added after the x.
This means that, 'Te'+colored.red('x')+'t in Red' is the same thing as 'Te\x1b[31m\x1b[22mx\x1b[39m\x1b[22mt in Red', and you can continue to add text in others colors to your hearts content.
Also, clint handles this, but just for informational purposes, if you want to see the full list of color escape sequences they can be found here. There are other ansi codes that allow you to do things like changing the position of the cursor. You can find a list of all of the ansi codes here. If you mess with ansi codes outside of the clint library, make sure you're taking into account every flow of control including unexpected exceptions that need will need to revert the text back to normal. It's no fun to execute a program, run into some errors that turn the console red, and then have the program exit, but you're still left with a red console.
Here's a non-external library approach which I tend to use a lot
class bcolors:
RED = '\033[91m'
GREEN = '\033[92m'
BLUE = '\033[94m'
CYAN = '\033[96m'
WHITE = '\033[97m'
YELLOW = '\033[93m'
MAGENTA = '\033[95m'
GREY = '\033[90m'
BLACK = '\033[90m'
DEFAULT = '\033[99m'
BOLD = '\033[1m'
UNDERLINE = '\033[4m'
END = '\033[0m'
print(bcolors.WHITE + foo + bcolors.END)
print(bcolors.GREEN + bar + bcolors.END)
I am interested in highlighting a specific portion of the json document based on some arbitrary matching algorithm. For example
{
"text" : "hello world"
}
I searched for "hello" and above json document has hello in it. How to highlight that particular portion "hello" while displaying the document on the terminal using python? Also, the json has to be pretty printed.
Expected
{
"text" : " `hello` world"
}
Text that is qoutes should be displayed in red color.
I can't comment :(
The answer here might be able to help you: Print in terminal with colors using Python?
For example, you could use termcolor (if you are using a linux style terminal) and replace "hello" with colored("hello", "red")
from termcolor import colored
sample_text = "colored hello there !"
print(sample_text)
print(sample_text.replace("hello", colored("hello", "red")))
I am trying to write my very first python script. This was working but then after some slight refactoring I have, apparently, broken the indentation. I can not determine what is the problem. The interpretor complains about the following method. Can someone point it out?
def dataReceived(self, data):
a = data.split(':')
print a
if len(a) > 1:
command = a[0]
content = a[1]
msg = ""
if command == "iam":
self.name = content
msg = self.name + " has joined"
elif command == "msg":
msg = self.name + ": " + content
print msg
The error reads: File "python_server.py", line 17
a = data.split(':')
^ IndentationError: expected an indented block
I encountered a similar problem using Sublime Text 2.
To solve, click on the "Tab Size" at the bottom of the editor, and choose "Convert Indentation to Tabs".
You start using a text editor that allows you to show indents, and you become consistent about using spaces instead of tabs, and you enforce that in your editor.
There are a great number of things you can do here:
Use an editor that can show control characters (like vi with set list).
Use a hex dumper program like od -xcb.
Just delete the white space at the start of that line and re-insert it (may want to check the preceding line as well).
if you're using the "Sublime Text 2" editor, then I found this answer helpful - it details how to turn on whitespace characters and also convert tabs to whitespaces
sublime-text-2-view-whitespace-characters
Try Editra - www.editra.org
Your code looks fine, syntax seems fine...your text editor may be creating your errors. Review your file with Editra to see/review indentation levels.
Editra saved my sanity - I thought I had correct syntax when viewing my script in Text Editors including Notepad++ with python indent plugin. However, when I would run the script, it would throw off indentation errors every time. I finally opened the script up in Editra, and I could see the problem. Notepad++ and other text editors did not show correct indentations/tabs/spaces. Editra showed errors e.g. unexpected spaces, tabs - which I was able to correct.
Editra will auto-indent your script [and show errors -tabs, spaces -that may not show up in other text editors].
If you have indent errors it will show up as blue underlined segment;
If you are writing script [adding/deleting lines] Editra will auto-indent the script.
**I would suggest opening your script and editing it in Editra.
Hope this helps!
Best of luck.
str8arrow
E.g:
print "hello"
What should I do to make the text "hello" bold?
class color:
PURPLE = '\033[95m'
CYAN = '\033[96m'
DARKCYAN = '\033[36m'
BLUE = '\033[94m'
GREEN = '\033[92m'
YELLOW = '\033[93m'
RED = '\033[91m'
BOLD = '\033[1m'
UNDERLINE = '\033[4m'
END = '\033[0m'
print(color.BOLD + 'Hello, World!' + color.END)
Use this:
print '\033[1m' + 'Hello'
And to change back to normal:
print '\033[0m'
This page is a good reference for printing in colors and font-weights. Go to the section that says 'Set graphics mode:'
And note this won't work on all operating systems but you don't need any modules.
You can use termcolor for this:
sudo pip install termcolor
To print a colored bold:
from termcolor import colored
print(colored('Hello', 'green', attrs=['bold']))
For more information, see termcolor on PyPi.
simple-colors is another package with similar syntax:
from simple_colors import *
print(green('Hello', ['bold'])
The equivalent in colorama may be Style.BRIGHT.
In straight-up computer programming, there is no such thing as "printing bold text". Let's back up a bit and understand that your text is a string of bytes and bytes are just bundles of bits. To the computer, here's your "hello" text, in binary.
0110100001100101011011000110110001101111
Each one or zero is a bit. Every eight bits is a byte. Every byte is, in a string like that in Python 2.x, one letter/number/punctuation item (called a character). So for example:
01101000 01100101 01101100 01101100 01101111
h e l l o
The computer translates those bits into letters, but in a traditional string (called an ASCII string), there is nothing to indicate bold text. In a Unicode string, which works a little differently, the computer can support international language characters, like Chinese ones, but again, there's nothing to say that some text is bold and some text is not. There's also no explicit font, text size, etc.
In the case of printing HTML, you're still outputting a string. But the computer program reading that string (a web browser) is programmed to interpret text like this is <b>bold</b> as "this is bold" when it converts your string of letters into pixels on the screen. If all text were WYSIWYG, the need for HTML itself would be mitigated -- you would just select text in your editor and bold it instead of typing out the HTML.
Other programs use different systems -- a lot of answers explained a completely different system for printing bold text on terminals. I'm glad you found out how to do what you want to do, but at some point, you'll want to understand how strings and memory work.
This depends if you're using Linux or Unix:
>>> start = "\033[1m"
>>> end = "\033[0;0m"
>>> print "The" + start + "text" + end + " is bold."
The text is bold.
The word text should be bold.
There is a very useful module for formatting text (bold, underline, colors, etc.) in Python. It uses the curses library, but it's very straightforward to use.
An example:
from terminal import render
print render('%(BG_YELLOW)s%(RED)s%(BOLD)sHey this is a test%(NORMAL)s')
print render('%(BG_GREEN)s%(RED)s%(UNDERLINE)sAnother test%(NORMAL)s')
I wrote a simple module named colors.py to make this a little more pythonic:
import colors
with colors.pretty_output(colors.BOLD, colors.FG_RED) as out:
out.write("This is a bold red text")
with colors.pretty_output(colors.BG_GREEN) as out:
out.write("This output have a green background but you " +
colors.BOLD + colors.FG_RED + "can" + colors.END + " mix styles")
print '\033[1m Your Name \033[0m'
\033[1m is the escape code for bold in the terminal.
\033[0m is the escape code for end the edited text and back default text format.
If you do not use \033[0m then all upcoming text of the terminal will become bold.
Check out Colorama. It doesn't necessarily help with bolding... but you can do colorized output on both Windows and Linux, and control the brightness:
from colorama import *
init(autoreset=True)
print Fore.RED + 'some red text'
print Style.BRIGHT + Fore.RED + 'some bright red text'
Install the termcolor module
sudo pip install termcolor
and then try this for colored text
from termcolor import colored
print colored('Hello', 'green')
or this for bold text:
from termcolor import colored
print colored('Hello', attrs=['bold'])
In Python 3 you can alternatively use cprint as a drop-in replacement for the built-in print, with the optional second parameter for colors or the attrs parameter for bold (and other attributes such as underline) in addition to the normal named print arguments such as file or end.
import sys
from termcolor import cprint
cprint('Hello', 'green', attrs=['bold'], file=sys.stderr)
Full disclosure, this answer is heavily based on Olu Smith's answer
and was intended as an edit, which would have reduced the noise on this page
considerably but because of some reviewers' misguided concept of
what an edit is supposed to be, I am now forced to make this a separate answer.
Simple boldness - two-line code
In Pythonย 3, you could use Colorama - simple_colors:
(On the Simple Colours page*, go to the heading 'Usage'.) Before you do what is below. Make sure you pip install simple_colours.
from simple_colors import *
print(green('hello', 'bold'))
Some terminals allow to print colored text. Some colors look like if they are "bold". Try:
print ('\033[1;37mciao!')
The sequence '\033[1;37m' makes some terminals to start printing in "bright white" that may look a bit like bolded white. '\033[0;0m' will turn it off.
Assuming that you really mean "print" on a real printing terminal:
>>> text = 'foo bar\r\noof\trab\r\n'
>>> ''.join(s if i & 1 else (s + '\b' * len(s)) * 2 + s
... for i, s in enumerate(re.split(r'(\s+)', text)))
'foo\x08\x08\x08foo\x08\x08\x08foo bar\x08\x08\x08bar\x08\x08\x08bar\r\noof\x08\
x08\x08oof\x08\x08\x08oof\trab\x08\x08\x08rab\x08\x08\x08rab\r\n'
Just send that to your stdout.
A simple approach relies on Unicode Mathematical Alphanumeric Symbols.
Code
def bold(
text,
trans=str.maketrans(
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789",
"๐๐๐๐๐๐๐๐๐๐๐๐๐ ๐ก๐ข๐ฃ๐ค๐ฅ๐ฆ๐ง๐จ๐ฉ๐ช๐ซ๐ฌ๐ญ๐ฎ๐ฏ๐ฐ๐ฑ๐ฒ๐ณ๐ด๐ต๐ถ๐ท๐ธ๐น๐บ๐ป๐ผ๐ฝ๐พ๐ฟ๐๐๐๐๐๐
๐๐๐ฌ๐ญ๐ฎ๐ฏ๐ฐ๐ฑ๐ฒ๐ณ๐ด๐ต",
),
):
return text.translate(trans)
Example
assert bold("Hello world") == "๐๐ฒ๐น๐น๐ผ ๐๐ผ๐ฟ๐น๐ฑ"
Discussion
Several pros and cons I can think of. Feel free to add yours in the comments.
Advantages:
As short as readable.
No external library.
Portable: can be used for instance to highlight sections in an ipywidgets Dropdown.
Extensible to italics, etc. with the appropriate translation tables.
Language agnostic: the same technic can be implemented in any programming language.
Drawbacks:
Requires Unicode support and a font where all the required glyphs are defined. This should be ok on any reasonably modern system, though.
No copy-pasteย : produces a faux-text. Note that '๐๐ผ๐ฟ๐น๐ฑ'.isalpha() is still True, though.
No diacritics.
Implementation notes
In the code above, the translation table is given as an optional argument, meaning that it is evaluated only once, and conveniently encapsulated in the function which makes use it. If you prefer a more standard style, define a global BOLD_TRANS constant, or use a closure or a lightweight class.
The bold text goes like this in Python:
print("This is how the {}bold{} text looks like in Python".format('\033[1m', '\033[0m'))
This is how the bold text looks like in Python.
Printing in bold made easy.
Install quo using pip:
from quo import echo
echo(f"Hello, World!", bold=True)
There is something called escape sequence which is used to represent characters that is not available in your keyboard. It can be used for formatting text (in this case bold letter format), represent special character with specific ASCII code and to represent Unicode characters.
In Python, escape sequences are denoted by a backslash \ followed by one or more characters. For example, the escape sequence \n represents a newline character, and the escape sequence \t represents a tab character.
Here for formatting text in bold use \033[1m before and after the text you want to represent in bold.
example-
print("This line represent example of \033[1mescape sequence\033[0m.")
In the escape sequence \033[1m, the 1 enables bold text, while the m is the command to set the text formatting. The \033[0m escape sequence resets the text formatting to the default settings.
The \033[0m escape sequence is used after the \033[1m escape sequence to turn off bold text and return to the default text formatting. This is necessary because the \033[1m escape sequence only enables bold text, it does not disable it.
def say(text: str):
print ("\033[1;37m" + text)
say("Hello, world!")
my code works okay.