/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

3 votes330 views2 answers
Foreach on dictionary in typescript
TypeScript
0 vote351 views1 answer
Clone object in typescript
TypeScript
6 votes330 views1 answer
Check if key is in the js object
TypeScript
1 vote291 views2 answers
Convert epoch time
TypeScript
0 vote332 views1 answer
Header elements on right
TypeScript
4 votes392 views1 answer
Typescript sleep
TypeScript
12 votes307 views1 answer
How check is file exist linux
TypeScript
1 vote272 views1 answer
Angular change element style on click
TypeScript
0 vote307 views1 answer
How to get label for points from a column in dataframe for scatter plot in python
TypeScript
4 votes273 views1 answer
How to break out of setinterval
TypeScript