課程

/后端開發

/Python

/初識Python

import?sys
f=open('yestday3','r')
f_new=open('yestday3','w')

fid_str?=?sys.argv[1]
replace_str?=?sys.argv[2]
for?line?in?f:
????if?fid_str?in?line:
????????line=line.replace(fid_str,replace_str)
????f_new.write(line)
f.close()
f_new.close()