How to matches anything except space and new line?

Question

I have a string, I just want to match string for any character except for space and new line. What must be regular expression for this?

I know regular expressions for anything but space i.e. [^ ]+ and regular expression for anything but new line [^n]+ (I’m on Windows). I am not able to figure how to club them together.

Asked By: Akashdeep Saluja

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Source

Answer 1

If you want to exclude just space and newline characters, then you might want to use

r'^[^ n]*$'

For example,

print re.match(r'^[^ n]*$', """WelcometoStackoverflow""")
# <_sre.SRE_Match object at 0x7f77a2a58238>
print re.match(r'^[^ n]*$', """Welcome toStackoverflow""")
# None
print re.match(r'^[^ n]*$', """Welcome
toStackoverflow""")
# None

Note that it will not eliminate all the other whitespace characters, like tabs, line feed characters etc

print re.match(r'^[^ n]*$', """WelcomettoStackoverflow""")
# <_sre.SRE_Match object at 0x7f77a2a58238>

So if you want to exclude all the whitespace characters then you can use

r'^[^s]*$'

Or

r'^S*$'

For example,

print re.match(r'^[^s]*$', """WelcometoStackoverflow""")
# <_sre.SRE_Match object at 0x7f9146c8b238>
print re.match(r'^[^s]*$', """Welcome toStackoverflow""")
# None
print re.match(r'^[^s]*$', """Welcome
toStackoverflow""")
# None
print re.match(r'^[^s]*$', """WelcomettoStackoverflow""")
# None

S is the same as [^s]. Quoting from the docs,

s

When the UNICODE flag is not specified, it matches any whitespace character, this is equivalent to the set [ tnrfv]. The LOCALE flag has no extra effect on matching of the space. If UNICODE is set, this will match the characters [ tnrfv] plus whatever is classified as space in the Unicode character properties database.

S

When the UNICODE flags is not specified, matches any non-whitespace character; this is equivalent to the set [^ tnrfv] The LOCALE flag has no extra effect on non-whitespace match. If UNICODE is set, then any character not marked as space in the Unicode character properties database is matched.

Answered By: thefourtheye

Answer 2

You can add the space character to your character class to be excluded.

^[^n ]*$

Regular expression

^              # the beginning of the string
 [^n ]*       # any character except: 'n' (newline), ' ' (0 or more times)
$              # before an optional n, and the end of the string

Answered By: hwnd

Answer 3

Try this

[^s]+

s is shorthand for whitespaces i.e space( ), newline (n), tab (t).

Answered By: Nitish770

How to matches anything except space and new line?

Question:

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s

S