Python錯誤，IndentationError：意外縮進

Question

每次我嘗試執行這個腳本，我得到一個錯誤。 代碼：

def getURL(): # Get tokens 
    output = subprocess.Popen(["livestreamer", "twitch.tv/CHANNEL_NAME", "-j"], stdout=subprocess.PIPE).communicate()[0] 
    return json.loads(output)['streams']['worst']['url'] # Parse json and return the URL parameter 

def build(): # Builds a set of tokens, aka viewers 
    global numberOfSockets 
    global numberOfViewers 
    while True: 
     if numberOfSockets < numberOfViewers: 
      numberOfSockets += 1 
      print "Building viewers " + str(numberOfSockets) + "/" + str(numberOfViewers) 
      urls.append(getURL()) 

錯誤：

File "sript.py", line 19 
    return json.loads(output)['streams']['worst']['url'] # Parse json and return the URL parameter 
    ^
IndentationError: unexpected indent 

Answer 1

縮進的getURL第二線，使其線與返回語句：

def getURL(): # Get tokens 
    output = subprocess.Popen(["livestreamer", "twitch.tv/CHANNEL_NAME", "-j"], stdout=subprocess.PIPE).communicate()[0] 
    return json.loads(output)['streams']['worst']['url'] 

記住了Python需要縮進嚴重，因爲它使用它來確定什麼與什麼。