How to Remove Parentheses from a String

stringr: Removing Parentheses and Brackets from string

We can use |

gsub("\\)|\\]", "", Test)
#[1] "-0.158" "0.426"  "1.01"   "1.6"    "2.18"   "2.77"  

or instead of escaping place the brackets inside the []

gsub("[][()]", "", Test)
#[1] "-0.158" "0.426"  "1.01"   "1.6"    "2.18"   "2.77"  

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If we want to do the extract instead of removing use either gregexpr/regmatches from base R or str_extract from stringr to check for patterns where a number could start with - and include .

library(stringr)
str_extract(Test, "-?[0-9.]+")
#[1] "-0.158" "0.426"  "1.01"   "1.6"    "2.18"   "2.77"  

How to remove parentheses and all data within using Python3

You can try this. r"\((.*?)\)"

The \( and \) say we want to target the actual parenthesis.

Then the parenthesis around the expression (.*?) say that we want to group what is inside.

Finally the .*? means that we want any character . and any repetition of that character *?.

s = "start (inside) this is in between (inside) end"
res = re.sub(r"\((.*?)\)", "", s)
print(res) 

prints

'start  this is in between  end'

Hope that helps.

RegEx remove parentheses from string

Try this regular expression:

s/([()])//g

Brief explanation:
[] is used to create a character set for any regular expression. My character set for this particular case is composed of ( and ). So overall, substitute ( and ) with an empty string.

Difficulty to remove several parentheses in a string, using stringr, in R

We can use str_remove_all instead of str_remove as this matches only the first instance

library(stringr)
str_remove_all(x, "[()]")
#[1] "example"

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