HackerRank custom checker

custom.py

Here is a standard template to work with custom checker  

```
from __future__ import division
import json
from sys import stdin
 
def check_inputs (inputs, outputs):
    #inputs is a "list" of all input files. (Read carefully)
    lis = [] # lis is a 0/1 array which means 1 -> testcase success and 0-> test case failed
    iterate = -1
    for inps, outps in zip(inputs, outputs):
        #inps and outs is of 1 perticular file. Remember to split on "\n". default split is a common mistake. 
        #Remember to trim the lines. 
        #Custom checker should never throw an error, remember to run it in try: except blocks and verify input to avoid infinite time errors
        lis.append(0)
        iterate += 1
        result = 0 
        lis[iterate] = result
    return True, lis
 
def process(data):
    score = 0
    testcase_input = data["inputs"]
    testcase_output = data["expected_outputs"]
    user_output = data["outputs"]
    a,b = check_inputs(testcase_input,user_output)
    return score, b
 
if __name__ ==  '__main__':
    stdin = stdin.read().split('\n')
 
    # Get the run directory for the submission we need to evaluate. I know,
    # hackish right?
    run_directory = stdin[-1]
 
    # request.json contains the data submitted for the current.
    request = json.load(open(run_directory + "request.json"))
 
    data = {
        # The submitted source code
        "source": request["source"],
        # The list of test cases
        "testcases": request["testcase_sources"],
        # The submitted language key (Eg: 5 for python)
        "lang": request["lang"],
        "expected_outputs": request["expected_outputs"],
        "outputs": [], 
        "inputs": [],
    }
 
    for index in range(len(request["testcase_sources"])):
        output = open(run_directory + "output%05d.out" %(index)).read()
        data["outputs"].append(output)
 
    for index in range(len(request["testcase_sources"])):
        inputs = open(run_directory + "input%05d.in" %(index)).read()
        data["inputs"].append(inputs)
    # Gathered all the data we could, lets process it
    score, testcase_status = process(data)
 
    print score
    print " ".join(str(i) for i in testcase_status)
```

Thanks! This is really helpful :)