20191129字符串对齐方法
左对齐
list=['http://c.biancheng.net/python/','http://c.biancheng.net','https://www.baidu.com/']
for s in list:
print(s.ljust(35))
右对齐
list=['http://c.biancheng.net/python/','http://c.biancheng.net','https://www.baidu.com/']
for s in list:
print(s.rjust(35))