151 151 1234561 156421 
 214156 1523132 031320

path = r'C:\Users\xxx\Desktop\test.txt'#文本存放的路径

with open(path) as file:
 lines = file.readlines()#读取每一行

a = ''#空字符（中间不加空格）
for line in lines:
 a += line.strip()#strip()是去掉每行末尾的换行符\n 1
c = a.split()#将a分割成每个字符串 2
b = ''.join(c)#将c的每个字符不以任何符号直接连接 3
print(a)
print(b)
#打印a,b观察不同

151 151 1234561 156421214156 1523132 031320
15115112345611564212141561523132031320

> lines
['151 151 1234561 156421 \n', ' 214156 1523132 031320\n']

'151 151 1234561 156421214156 1523132 031320'

['151', '151', '1234561', '156421214156', '1523132', '031320']