编写一个程序，询问用户地址文件的名称和输出文件的名称

Question

您的程序应将所有 "NY" 替换为 "New York," 所有 "NJ" 替换为“New Jersey

例如，如果您的文件 replace.txt 包含：

from wikipedia:
NY-NJ-CT Tri-State Area
The NY metropolitan area includes the most populous city in the US
(NY City); counties comprising Long Island and the Mid- and Lower Hudson 
Valley in the state of New York.

输出必须是：

from wikipedia:
New York-New Jersey-CT Tri-State Area
The New York metropolitan area includes the most populous city in the United 
States (New York City); counties comprising Long Island and the Mid- and 
Lower Hudson Valley in the state of New York.

我尽力了，这是我的程序。

filename = input("Please enter a file name: ")
openfile = open(filename, "r")
readfile = openfile.read()


for i in readfile:
    for string in i.replace("NY", "New York"):
        Replace = string.replace("NJ", "New Jersey")

print(Replace)

问题是它没有打印出任何东西。请帮忙！

Answer 1

只是为了替换两个thinkgs，这就足够了：

Replace = readfile.replace("NJ", "New Jersey")
Replace = Replace.replace("NY", "New York")

# or
# Replace = readfile.replace("NJ", "New Jersey").replace("NY", "New York")

print(Replace)

这里不需要任何 for 循环。 readfile 已经包含输入文件的全部内容。

要将结果保存到新文件中：

with open("outfile.txt",'w') as f:
    f.write(Replace)

Answer 2

类似于：

for i in readfile:
    i = i.replace("NY", "New York")
    i = i.replace("NJ", "New Jersey")
    print (i)

但这不太正确，因为您正在将整个文件读入 readfile。逐行处理文件通常更好

filename = input("Please enter a file name: ")
with open(filename, "r") as readfile:
    for i in readfile:
        i = i.replace("NY", "New York")
        i = i.replace("NJ", "New Jersey")
        print (i)

编写一个程序，询问用户地址文件的名称和输出文件的名称

Write a program that asks the user for the name of file of addresses and a name of an output file

python

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