UNIX for Dummies Questions & Answers

['9', '*', '(', '11', '+', '5', ')', '*', '7']

[9, '*', '(', 11, '+', 5, ')', '*', 7]

awk -F, -v c=\' '{for(i=0;++i<=NF;){if($i ~ /[0-9]/){gsub(c,x,$i)}}}1' OFS=,

while get_expression():
	t = get_next_token()
	LI1 = [] #creates an array of tokens
	LI = [3, '*', '(', 9, '+', 4, ')', '*', 5, ''] #hardcoded for testing purposes.
	while t:
		LI1.append(t) 
		t = get_next_token()
	
	LI1.append('')
	os.system("awk -F, -v c=\' '{for(i=0;++i<=NF;){if($i ~ /[0-9]/){gsub(c,x,$i)}}}1' OFS=$LI1")
	print "Actual Parse:"
	print LI1