import requests

api = 'http://site.api.espn.com/apis/site/v2/sports/baseball/mlb/scoreboard'

jsonData = requests.get(api).json()
events = jsonData['events']

links = []
for event in events:
    event_links = event['links']
    for each in event_links:
        if each['text'] == 'Gamecast':
            links.append(each['href'])