Python脚本500错误

我目前正在尝试在我的web服务器上运行一个相当基本的python脚本。当我尝试导入服务器上没有安装的东西时，我遇到了同样的错误，比如

导入json

我以前在服务器上运行过一个基本脚本，所以我知道python可以在上面运行。该脚本在我的python IDE中运行时没有任何问题，但当我将其放入服务器时，我得到一个500错误。任何关于为什么会发生这种情况的想法都将不胜感激。我的网络主机是JustHost.com，它使用CPanel。我确实联系过他们，他们说是关于我的剧本

#! /usr/bin/python



import MySQLdb


db = MySQLdb.connect("localhost", "username","password","database")
CUR = db.cursor()

def get_password(username):
    sql = "select Password from Users where Username=%s"
    CUR.execute(sql, [username])
    result = CUR.fetchone()[0]
    if result == None:
        return "User does not exist"
    else:
        return result[0]

def get_comment(username):
    sql = "select Comments from Users where Username=%s"
    CUR.execute(sql, [username])
    result = CUR.fetchone()
    if result == None:
        return "User has not updated comment"
    else:
        return result[0]

def get_email(username):
    sql = "select Email from Users where Username=%s"
    CUR.execute(sql, [username])
    result = CUR.fetchone()
    if result == None:
        return "User does not exist"
    else:
        return result[0]

def get_longitude(username):
    sql = "select Longitude from Users where Username=%s"
    CUR.execute(sql, [username])
    result = CUR.fetchone()
    if result == None:
        return "User did not update location"
    else:
        return result[0]

def get_latitude(username):
    sql = "select Latitude from Users where Username=%s"
    CUR.execute(sql, [username])
    result = CUR.fetchone()
    if result == None:
        return "User did not update location"
    else:
        return result[0]

def get_address(username):
    sql = "select Address from Users where Username=%s"
    CUR.execute(sql, [username])
    result = CUR.fetchone()
    if result == None:
        return "User did not update email"
    else:
        return result[0]

def friends_list(username):
    sql = "select all friend from accepted_req where userLoggedIn=%s"
    CUR.execute(sql, [username])
    result=[]
    query = CUR.fetchall()
    if query == None:
        return "User has no friends"
    else:
        for friend in query:
            result.append(friend[0])

    return result

def markers_on_map(username):
    friendsList = friends_list(username)
    fullFriendsList = []
    for friend in friendsList:
        UserDictionary = {}
        UserDictionary["Username"] = friend
        UserDictionary["Comment"] = str(get_comment(friend))
        UserDictionary["Latitude"] = get_latitude(friend)
        UserDictionary["Longitiude"] = get_longitude(friend)
        fullFriendsList.append(UserDictionary)

    return fullFriendsList


print "Content-type: text/html\n\n"

print markers_on_map("brock")

---

我修复了它，使它看起来完全完美的标准，我的网络主机。新脚本现在如下所示

#! /usr/bin/python



import MySQLdb


db = MySQLdb.connect("localhost", "username","password","database")
CUR = db.cursor()

def get_password(username):
    sql = "select Password from Users where Username=%s"
    CUR.execute(sql, [username])
    result = CUR.fetchone()[0]
    if result == None:
        return "User does not exist"
    else:
        return result[0]

def get_comment(username):
    sql = "select Comments from Users where Username=%s"
    CUR.execute(sql, [username])
    result = CUR.fetchone()
    if result == None:
        return "User has not updated comment"
    else:
        return result[0]

def get_email(username):
    sql = "select Email from Users where Username=%s"
    CUR.execute(sql, [username])
    result = CUR.fetchone()
    if result == None:
        return "User does not exist"
    else:
        return result[0]

def get_longitude(username):
    sql = "select Longitude from Users where Username=%s"
    CUR.execute(sql, [username])
    result = CUR.fetchone()
    if result == None:
        return "User did not update location"
    else:
        return result[0]

def get_latitude(username):
    sql = "select Latitude from Users where Username=%s"
    CUR.execute(sql, [username])
    result = CUR.fetchone()
    if result == None:
        return "User did not update location"
    else:
        return result[0]

def get_address(username):
    sql = "select Address from Users where Username=%s"
    CUR.execute(sql, [username])
    result = CUR.fetchone()
    if result == None:
        return "User did not update email"
    else:
        return result[0]

def friends_list(username):
    sql = "select all friend from accepted_req where userLoggedIn=%s"
    CUR.execute(sql, [username])
    result=[]
    query = CUR.fetchall()
    if query == None:
        return "User has no friends"
    else:
        for friend in query:
            result.append(friend[0])

    return result

def markers_on_map(username):
    friendsList = friends_list(username)
    fullFriendsList = []
    for friend in friendsList:
        UserDictionary123 = {}
        UserDictionary123["Username"] = friend
        UserDictionary123["Comment"] = str(get_comment(friend))
        UserDictionary123["Latitude"] = get_latitude(friend)
        UserDictionary123["Longitiude"] = get_longitude(friend)
        fullFriendsList.append(UserDictionary123)

    return fullFriendsList

---

是否检查了从Web服务器启动脚本时是否设置了环境变量？根据MySQLdb的安装方式，

$PYTHONPATH

可能是您的朋友。。。