Python-读取和附加文件

Question

我正在尝试创建一个程序，该程序要求用户输入“名称”并检查以确保名称是字母顺序，不会太长，并且不在名为 Unacceptable_Names 的文件中（包含不适当的名称）

为确保程序的每个用户不使用相同的名称，当玩家输入名称时，我将其附加到 Unacceptable_Names，然后当下一个玩家玩时，如果他们在这个文件。

下面的代码适用于文件中已经创建的单词，但是当我重播并输入相同的名称时，我没有收到错误。有人可以帮助解决为什么没有检查名称吗？

def Char_Name(self,name):
    string1=str(name).lower()
    unacceptable_names=open("C://Users//Documents//Unacceptable_Names.txt", "r")
    unacceptable_names2=open("C://Users//Documents//Unacceptable_Names.txt", "a")
    names_list= []
    for line in unacceptable_names.readlines():
        for i in line.split(","):
            names_list.append(i.strip())
    if name.isalpha()==False:
        print("You entered a name containing non-alphabetic characters, pease reenter a new name:")
        main()
    elif len(name)>=10:
        print("You entered a name containing 10 or more characters, pease reenter a new name:")
        main()
    elif string1 in names_list:
        print("You entered a name containing bad words or a name already in use! Try again.")
        main()
    else:
        unacceptable_names2.write("\n"+str(name)+",")
        unacceptable_names2.close()
        self.character_name=name

这是 unacceptable_names 在输入名字“Emily”后的样子：[以及之前文件中的一些其他坏词-如果输入所有这些都会给我一个错误]

皱巴巴的海星， XX, xxx, 瑶瑶 黄色的阵雨， 呸呸呸， 动物癖， 艾米丽，

但是，如果我手动进入文本文件并准确地写出上面的“Emily”，它会给我我需要的错误消息。

Answer 1

这一行unacceptable_names2.write(name) 将名称附加到同一行。 您应该在每个名称后加上,。只有这样

for line in unacceptable_names.readlines():
        for i in line.split(","):
            names_list.append(i.strip())`

工作。

unacceptable_names2.write(name)之后的当前文件内容：

helloonetwothree

你想要的：

hello,one,two,three

更新代码：

def Char_Name(self,name):
    string1=str(name).lower()
    unacceptable_names=open("C://Users//Documents//Unacceptable_Names.txt", "r")
    unacceptable_names2=open("C://Users//Documents//Unacceptable_Names.txt", "a")
    names_list= []
    for line in unacceptable_names.readlines():
        for i in line.split(","):
            names_list.append(i.strip())
    if name.isalpha()==False:
        print("You entered a name containing non-alphabetic characters, pease reenter a new name:")
        main()
    elif len(name)>=10:
        print("You entered a name containing 10 or more characters, pease reenter a new name:")
        main()
    elif string1 in names_list:
        print("You entered a name containing bad words or a name already in use! Try again.")
        main()
    else:
        unacceptable_names2.write(name+',')
        unacceptable_names2.close()
        self.character_name=name

更新：

在上面的代码中添加i.strip()。 您以某种方式在每个名称的开头添加了一个空格。 因此，当您搜索 yiffy 时，它无法找到匹配项。因为它被存储为yiffy。

In [54]: 'wrinkled starfish, xx, xxx, yaoi, yellow showers, yiffy, zoophilia, Emily,'.split(','
   ....: )
Out[54]: 
['wrinkled starfish',
 ' xx',
 ' xxx',
 ' yaoi',
 ' yellow showers',
 ' yiffy',
 ' zoophilia',
 ' Emily',
 '']

Answer 2

def Char_Name(self,name):
    string1=str(name).lower()
    unacceptable_names=open("C://Users//Documents//Unacceptable_Names.txt", "r")
    unacceptable_names2=open("C://Users//Documents//Unacceptable_Names.txt", "a")
    names_list= []
    for line in unacceptable_names.readlines():
        for i in line.split(","):
            names_list.append(i)
    if name.isalpha()==False:
        print("You entered a name containing non-alphabetic characters, pease reenter a new name:")
        main()
    elif len(name)>=10:
        print("You entered a name containing 10 or more characters, pease reenter a new name:")
        main()
    elif string1 in names_list:
        print("You entered a name containing bad words or a name already in use! Try again.")
        main()
    else:
        unacceptable_names2.write(',' + str(name) ) # <------- 
        unacceptable_names2.close()
        self.character_name=name

或者您可以将最后一个 else 更改为：

else:
        unacceptable_names2.write('\n' + str(name) + '\n')
        unacceptable_names2.close()
        self.character_name=name

Answer 3

您还应该确保名称完全匹配。如果您只是在 python 中匹配，它可能会将一个名称混淆为另一个名称。示例，有两个用户名相似的用户示例： 1) 梅根 2) 梅根 2015。 在一个简单的匹配案例中：如果你搜索 Megan，python 可能会找到 Megan2015 并说它找到了，因为“Megan2015”中的“Megan”

def exact_match(phrase, word):
import re

b = r'(\s|^|$)'
res = re.match(b + word + b, phrase, flags=re.IGNORECASE)
return bool(res)  # returns true or false

def Char_Name(self,name):

string1=str(name).lower()
unacceptable_names=open("C://Users//Documents//Unacceptable_Names.txt", "r")
unacceptable_names2=open("C://Users//Documents//Unacceptable_Names.txt","a")
names_list= []

for line in unacceptable_names.readlines():

    for i in line.split(","):
        names_list.append(i)

if name.isalpha()==False:
    print("You entered a name containing non-alphabetic characters, please  reenter a new name:")
    main()

elif len(name)>=10:
    print("You entered a name containing 10 or more characters, pease reenter a new name:")
    main()

elif:
    for n in range(0,len(names_list)):

        if exact_match(string1, names_list[n]) == True:
            print("You entered a name containing bad words or a name already in use! Try again.")
            main()
else:
    unacceptable_names2.write(str(name + " , ") )
    unacceptable_names2.close()
    self.character_name=name

Answer 4

您应该将每个名称写在单独的行上，您根本不需要 aplit，在打开文件时创建一组名称并使用 a+ 打开一次以进行读取和附加：

def Char_Name(self,name):
    string1 = name.lower()
    with open("C://Users//Documents//Unacceptable_Names.txt", "a+") as f:
        unacceptable_names = set(line.rstrip() for line in f)
    if not name.isalpha():
        print("You entered a name containing non-alphabetic characters, please re-enter a new name:")
        main()
    elif len(name) >= 10:
        print("You entered a name containing 10 or more characters, please re-enter a new name:")
        main()
    elif string1 in unacceptable_names:
        print("You entered a name containing bad words or a name already in use! Try again.")
        main()
    f.write("{}\n".format(name))
    self.character_name = name

使用pickle 存储一组名称可能是一个更好的主意。

我还会使用 while 循环在循环中询问用户他们的姓名，而不是重复调用 main。

def Char_Name(self):
    with open("C://Users//Documents//Unacceptable_Names.txt", "a+") as f:
        unacceptable_names = set(line.rstrip() for line in f)
    while True:
        name = input("Please enter your username")
        _name = name.lower()
        if _name in unacceptable_names:
            print("You entered a name containing bad words or a name already in use! Try again.")
        elif _name.isalpha():
            print("You entered a name containing non-alphabetic characters, please re-enter a new name:")
        elif len(name) >= 10:
            print("You entered a name containing 10 or more characters, please re-enter a new name:")
        else:
            break
    f.write("{}\n".format(name))
    self.character_name = name

除非您真的想要一个列表，否则无需使用 readlines，如果您要构建一个名称容器，那么集合是检查成员资格的最有效方法。