python名称错误名称未定义
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时间：2020-08-19 13:20:20 来源:igfitidea点击:
python name error name not defined
提问by user2405840
I get the error name not defined on running this code in python3:
我在 python3 中运行此代码时得到未定义的错误名称：
def main():
D = {} #create empty dictionary
for x in open('wvtc_data.txt'):
key, name, email, record = x.strip().split(':')
key = int(key) #convert key from string to integer
D[key] = {} #initialize key value with empty dictionary
D[key]['name'] = name
D[key]['email'] = email
D[key]['record'] = record
print(D[106]['name'])
print(D[110]['email'])
main()
Could you please help me fix this?
你能帮我解决这个问题吗？
采纳答案by fjarri
Your variable Dis local to the function main, and, naturally, the code outside does not see it (you even try to access it beforerunning main). Do something like
您的变量D是函数的局部变量main，自然而然，外部代码看不到它（您甚至尝试在运行之前访问它main）。做类似的事情
def main():
D = {} #create empty dictionary
for x in open('wvtc_data.txt'):
key, name, email, record = x.strip().split(':')
key = int(key) #convert key from string to integer
D[key] = {} #initialize key value with empty dictionary
D[key]['name'] = name
D[key]['email'] = email
D[key]['record'] = record
return D
D = main()
print(D[106]['name'])
print(D[110]['email'])
