/TypeScript/PYTHON STACK FUNCTION count the valid number of brackets Returns the total number of valid brackets in the string

PYTHON STACK FUNCTION count the valid number of brackets Returns the total number of valid brackets in the string

import sys

def error(c, line_number, column_number):
    print 'Error: unmatched', c, 'line', line_number, 'column', column_number

def check(stack, wanted, c, line_number, column_number):
    if stack[-1] != wanted:
        error(c, line_number, column_number)
    else:
        stack.pop()

def check_parentheses(f):
    stack = list()
    line_number = 0
    for line in f:
        line_number = line_number + 1
        column_number = 0
        for c in line:
            column_number = column_number + 1
            if c == '(' or c == '[' or c == '{':
                stack.append(c)
            elif c == ')':
                check(stack, '(', ')', line_number, column_number)
            elif c == ']':
                check(stack, '[', ']', line_number, column_number)
            elif c == '}':
                check(stack, '{', '}', line_number, column_number)

def main():
    filename = sys.argv[1]
    try:
        f = file(filename)
    except IOError:
        sys.stderr.write('Error: Cannot open file %s' % filename)
        sys.exit(1)
    check_parentheses(f)
    f.close()

main()

Source: stackoverflow.com

Similar codes

-1 vote103 views1 answer
Components react to hooks
TypeScript
5 votes119 views2 answers
Copy array typescript
TypeScript
0 vote104 views1 answer
Nuxt typescript middleware property
TypeScript
30 votes112 views3 answers
Set number of decimals python
TypeScript
0 vote131 views1 answer
How to add 2 bind events on one button tkinteer
TypeScript
10 votes108 views3 answers
Addeventlistener with arguments in angular 8
TypeScript
4 votes112 views1 answer
Typescript string interpolation
TypeScript
2 votes102 views2 answers
Typescript convert numer to string
TypeScript
0 vote81 views1 answer
How to run springboots processbuilder
TypeScript
0 vote122 views1 answer
Restaurants near me
TypeScript