1.占硬盘修改 import os file_name="兼职.txt" new_file_name="%s.new".% file_name old_str="hong" #需要替换的量 new_str="洪"#需要替换成的量 old_f=open(file_name,"read") new_f=open(new_file_name,"w") for line in file_name
描述 There are two circles on the plane. Now you must to calculate the area which they cover the plane. For example, in Figure 1, the area of the red region is the answer of this problem. 输入 The input contains multiple test cases. The first line contai