Regex Version of Strip(): Using Optional Function Parameter in Regex
$begingroup$
The code below is a regex-based version of the strip() string method.
It takes two arguments: a string (inputString) and a character (char). The second argument is optional. If a second argument is called, all instances of that character at the beginning and end of the string are stripped in the resulting print. If no second argument is called, char defaults to 's' and all space characters are stripped from the beginning and end of the string.
def pseudoStrip(inputString, char='s'):
stripRegex = re.compile(r'^'+char+'|'+char+'+$')
print(stripRegex.sub('', inputString))
Questions:
(1) How does '+char+' work? I gleaned this formatting from elsewhere but have been unable to figure out how or why it works.
(2) Is there a difference between '+char+' and ['+char+']?
(3) Is there a preferred way to pull a function parameter directly into a regex?
python regex
asked 4 mins ago
hseekhseek
412
$endgroup$
add a comment |
$begingroup$
The code below is a regex-based version of the strip() string method.
It takes two arguments: a string (inputString) and a character (char). The second argument is optional. If a second argument is called, all instances of that character at the beginning and end of the string are stripped in the resulting print. If no second argument is called, char defaults to 's' and all space characters are stripped from the beginning and end of the string.
def pseudoStrip(inputString, char='s'):
stripRegex = re.compile(r'^'+char+'|'+char+'+$')
print(stripRegex.sub('', inputString))
Questions:
(1) How does '+char+' work? I gleaned this formatting from elsewhere but have been unable to figure out how or why it works.
(2) Is there a difference between '+char+' and ['+char+']?
(3) Is there a preferred way to pull a function parameter directly into a regex?
python regex
asked 4 mins ago
hseekhseek
412
$endgroup$
add a comment |
$begingroup$
The code below is a regex-based version of the strip() string method.
It takes two arguments: a string (inputString) and a character (char). The second argument is optional. If a second argument is called, all instances of that character at the beginning and end of the string are stripped in the resulting print. If no second argument is called, char defaults to 's' and all space characters are stripped from the beginning and end of the string.
def pseudoStrip(inputString, char='s'):
stripRegex = re.compile(r'^'+char+'|'+char+'+$')
print(stripRegex.sub('', inputString))
Questions:
(1) How does '+char+' work? I gleaned this formatting from elsewhere but have been unable to figure out how or why it works.
(2) Is there a difference between '+char+' and ['+char+']?
(3) Is there a preferred way to pull a function parameter directly into a regex?
python regex
asked 4 mins ago
hseekhseek
412
$endgroup$
The code below is a regex-based version of the strip() string method.
It takes two arguments: a string (inputString) and a character (char). The second argument is optional. If a second argument is called, all instances of that character at the beginning and end of the string are stripped in the resulting print. If no second argument is called, char defaults to 's' and all space characters are stripped from the beginning and end of the string.
def pseudoStrip(inputString, char='s'):
stripRegex = re.compile(r'^'+char+'|'+char+'+$')
print(stripRegex.sub('', inputString))
Questions:
(1) How does '+char+' work? I gleaned this formatting from elsewhere but have been unable to figure out how or why it works.
(2) Is there a difference between '+char+' and ['+char+']?
(3) Is there a preferred way to pull a function parameter directly into a regex?
python regex
python regex
asked 4 mins ago
hseekhseek
412
asked 4 mins ago
hseekhseek
412
asked 4 mins ago
hseekhseek
412
asked 4 mins ago
hseekhseek
412
asked 4 mins ago
hseekhseek
412
412
add a comment |
add a comment |
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