python用户输入q退出,python

我有以下代码根据用户输入从给定的文本文件中提取数据：def read_file():

counties = []

f = open('file.txt', 'r')

for line in f.readlines():

data = {}

lines = ' '.join(line.split()).split()

data[''] = int(lines[5])

data[''] = float(lines[3])

data[''] = float(lines[2])

data[''] = line[1:6].rstrip(' ')

file.append(data)def info_search(file):

user_search = input('Search for a word: ').lower()

while user_search != 'q' and user_search != 'quit':

for f in file:

if user_search in file['Data Info'].lower():

print(data_info)

break

user_search = input('Search for a word: ').lower()

此程序返回以下输出：>>> Search for a word:

>>> allen

>>> word: Allen, Age: 12, Height: 5'4, GPA: 3.8

>>> Search for a word:

>>> quit

>>>

输入将提示程序根据用户输入的单词从文本文件中提取特定数据。这一切都很好。我无法弄清楚如何添加一个功能，如果在文件中找不到该单词，则会提示您再次输入。

现在，如果在文件中未找到该单词，该程序将要求再次搜索。但是，在要求其他搜索之前，我需要说一些类似“在文本文件中找不到单词”之类的内容。

这是我正在寻找的输出：>>> Search for a word:

>>> Jim

>>> Word: Jim, Age: 20, Height: 6'1, GPA: 2.5

>>> Search for a word:

>>> Molly

>>> Your searched word could not be found.

>>> Search for a word:

>>> Eddy

>>> Word: Eddy, Age: 15, Height: 5'6, GPA: 4.0

>>> Search for a word:

>>> quit

>>>

我觉得这样的事情应该起作用：def info_search(file):

user_search = input('Search for a word: ').lower()

while user_search != 'q' and user_search != 'quit':

for f in file:

if user_search in file['Data Info'].lower():

print(data_info)

user_search = input('Search for a word: ').lower()

else:

print("Your searched word could not be found.")

user_search = input('Search for a word: ').lower()

但是它只是输出无论我输入什么词都找不到您搜索到的词。即使输入在第一个代码中起作用的单词，现在也不再起作用。即使键入quit也不再退出循环。请帮忙。

新输出：>>> Search for a word:

>>> Allen

>>> Your searched word could not be found.

>>> Search for a word:

>>> quit

>>> Your searched word could not be found.

>>> Search for a word:

python用户输入q退出,python

我有以下代码根据用户输入从给定的文本文件中提取数据：def read_file():

counties = []

f = open('file.txt', 'r')

for line in f.readlines():

data = {}

lines = ' '.join(line.split()).split()

data[''] = int(lines[5])

data[''] = float(lines[3])

data[''] = float(lines[2])

data[''] = line[1:6].rstrip(' ')

file.append(data)def info_search(file):

user_search = input('Search for a word: ').lower()

while user_search != 'q' and user_search != 'quit':

for f in file:

if user_search in file['Data Info'].lower():

print(data_info)

break

user_search = input('Search for a word: ').lower()

此程序返回以下输出：>>> Search for a word:

>>> allen

>>> word: Allen, Age: 12, Height: 5'4, GPA: 3.8

>>> Search for a word:

>>> quit

>>>

输入将提示程序根据用户输入的单词从文本文件中提取特定数据。这一切都很好。我无法弄清楚如何添加一个功能，如果在文件中找不到该单词，则会提示您再次输入。

现在，如果在文件中未找到该单词，该程序将要求再次搜索。但是，在要求其他搜索之前，我需要说一些类似“在文本文件中找不到单词”之类的内容。

这是我正在寻找的输出：>>> Search for a word:

>>> Jim

>>> Word: Jim, Age: 20, Height: 6'1, GPA: 2.5

>>> Search for a word:

>>> Molly

>>> Your searched word could not be found.

>>> Search for a word:

>>> Eddy

>>> Word: Eddy, Age: 15, Height: 5'6, GPA: 4.0

>>> Search for a word:

>>> quit

>>>

我觉得这样的事情应该起作用：def info_search(file):

user_search = input('Search for a word: ').lower()

while user_search != 'q' and user_search != 'quit':

for f in file:

if user_search in file['Data Info'].lower():

print(data_info)

user_search = input('Search for a word: ').lower()

else:

print("Your searched word could not be found.")

user_search = input('Search for a word: ').lower()

但是它只是输出无论我输入什么词都找不到您搜索到的词。即使输入在第一个代码中起作用的单词，现在也不再起作用。即使键入quit也不再退出循环。请帮忙。

新输出：>>> Search for a word:

>>> Allen

>>> Your searched word could not be found.

>>> Search for a word:

>>> quit

>>> Your searched word could not be found.

>>> Search for a word: