Aprende RegExp Creation | ContentDev Tools


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import re

# Enter expected input
correct_text = r'''print('Example string 1')
print('Example string 2')
'''

# Enter expected output
output = r'''Example string 1
Example string 2
'''

# Set up pattern to search for
check_pattern = r'''print(|'Example string 1'|)'''
# Set up space replacer with escape character
space_replacer = '\|'

# RegExp creation
reg = '^(((?!' + re.escape(check_pattern).replace(space_replacer, '\ *') + ').)*)$'

# Resulting RegExp
print('RegExp:')
print(reg)

# If RegExp found in Input
if re.findall(reg, correct_text, re.S) == []:
    print('--- Input DONE! ---')
    
# If RegExp found in Output
if re.findall(reg, output, re.S) == []:
    print('--- Output DONE! ---')

Set up:

correct_text - what should be in the user's input field for the correct result.
output - what should be in the user's output field for the correct result.
check_pattern - string that you want to check for. Place a space_replacer in all places where the user might enter an indefinite number of spaces.

If RegExp found your pattern in the user's input, you will receive: --- Input DONE! ---

If the pattern is found in the user's output: --- Output DONE! ---

¿Todo estuvo claro?

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Sección 2. Capítulo 3

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              12345678910111213141516171819202122232425262728293031
            
import re

# Enter expected input
correct_text = r'''print('Example string 1')
print('Example string 2')
'''

# Enter expected output
output = r'''Example string 1
Example string 2
'''

# Set up pattern to search for
check_pattern = r'''print(|'Example string 1'|)'''
# Set up space replacer with escape character
space_replacer = '\|'

# RegExp creation
reg = '^(((?!' + re.escape(check_pattern).replace(space_replacer, '\ *') + ').)*)$'

# Resulting RegExp
print('RegExp:')
print(reg)

# If RegExp found in Input
if re.findall(reg, correct_text, re.S) == []:
    print('--- Input DONE! ---')
    
# If RegExp found in Output
if re.findall(reg, output, re.S) == []:
    print('--- Output DONE! ---')