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with open('jisuan.txt','r',encoding='utf-8') as f_r:
expresses = f_r.readlines()
with open('jieguo.txt','w',encoding='utf-8') as f_w:
for exp in expresses:
f_w.write("%s=%d"%(exp.replace('\n',''),eval(exp)))
f_w.write('\n')
print("%s=%d"%(exp.replace('\n',''),eval(exp)))