I have upgraded to Python 3 and can’t figure out how to convert backslash escaped newlines to HTML.
The browser renders the backslashes literally, so “n” has no effect on the HTML source. As a result, my source page is all in one long line and impossible to diagnose.
2
normally I do like this s=s.replace("n","<br />n")
because
<br /> is needed in web page display and
n is needed in source display.
just my 2 cents
5
The solution is:
#!/usr/bin/python
import sys
def print(s): return sys.stdout.buffer.write(s.encode('utf-8'))
print("Content-type:text/plain;charset=utf-8nn")
print('晉n')
See the original discussion here:
http://groups.google.com/group/comp.lang.python/msg/f8bba45e55fe605c
1
Maybe I don’t get it, but isn’t <br /> some kind of newline for HTML?
s = "Hello HTMLn"
to_render = s.replace("n", "<br />")
If you render something with mimetype "text/plain" newlines should work.
1
If you are using Django, this answer will be helpful.
It’s about how you render the page and whether you escape HTML or no.
Since I have solved basic Markdown, I have resolved the new lines with a regular expression.
import re
br = re.compile(r"(rn|r|n)") # Supports CRLF, LF, CR
content = br.sub(r"<br />n", content) # n for JavaScript
For me, using Python 3.8.0, adding the string <br /> in the string I want displayed onto the html page, and then encoding the final string in utf-8 does the trick. Take a look at the following code:
min_value = 1
max_value = 10
output_string = "min =" + min_value
output_string += "<br /> max =" + max_value
return output_string.encode('utf-8')
For example, if this code is used as the implementation of a REST API endpoint, then calling this endpoint will display:
min =1
max =10
Print() should add a newline by default – unless you tell it otherwise. However there have been other changes in Python 3:
Old: print "The answer is", 2*2
New: print("The answer is", 2*2)
Old: print x, # Trailing comma suppresses newline
New: print(x, end=" ") # Appends a space instead of a newline
Old: print # Prints a newline
New: print() # You must call the function!
Old: print >>sys.stderr, "fatal error"
New: print("fatal error", file=sys.stderr)
Old: print (x, y) # prints repr((x, y))
New: print((x, y)) # Not the same as print(x, y)!
Old = Python 2.5, New = Python 3.
More details here: http://docs.python.org/3.1/whatsnew/3.0.html
1