试试这个:

u=open("url.txt","r")  
url=u.read().replace('\n','')  
print(url)  

temp = open(filename,'r').read().split('\n')

每次读取文件一行。使用str.rstrip(chars)从字符串末尾删除不需要的字符。

with open(filename, 'r') as fileobj:
    for row in fileobj:
        print(row.rstrip('\n'))

请参见str.strip([chars])和str.lstrip([chars])。

my_file = open("first_file.txt", "r")
for line in my_file.readlines():
    if line[-1:] == "\n":
        print(line[:-1])
    else:
        print(line)
my_file.close() 

试试这个:

u=open("url.txt","r")  
url=u.read().replace('\n','')  
print(url)  

temp = open(filename,'r').read().splitlines()