35 value error and type error in python telugu

5000
6000
3000.99
90000
8000
5000
3500


sal=open("C:\\Users\\lachu\\Desktop\\sal.txt","r")
print(sal.read())

#print(file.read())
sal.seek(0)
totalsal=0
for x in sal:  
    totalsal=float(x)+totalsal

sal.close()
print ("tatoal salary is:",totalsal)