10-1 Python notes
file_path = "learning_python.txt"
with open(file_path) as obj:
str1 = obj.read()
print(str1)
with open(file_path) as obj:
for line in obj.readlines():
print (line)
with open(file_path) as obj:
str3 = obj.readlines()
print(str3)
10-2 C notes
file_path = "learning_python.txt"
with open(file_path) as obj:
str1 = obj.read()
print(str1.replace("python", "C"))
10-3 guests
file_path = "guest.txt"
guest = input("Please input the guest name: ")
with open(file_path, 'w') as obj:
obj.write(guest)
10-4 guests list
file_path = "guest.txt"
with open(file_path, 'w') as obj:
while True:
guest = input("Please input the guest name: ")
if guest == "q": break
obj.write(guest + "\n")
10-5 survey of programming
file_path = "guest.txt"
with open(file_path, 'w') as obj:
while True:
guest = input("Please input the reason why you love programming: ")
if guest == "q": break
obj.write(guest + "\n")
10-6 addition calculator
try:
num1 = input("Please input the first number: ")
num2 = input("Please input the second number: ")
print(int(num1) + int(num2))
except (ValueError):
print("Sorry, you cannot input a string.")
10-7 additioner
while True:
try:
num1 = input("Please input the first number: ")
num2 = input("Please input the second number: ")
res = int(num1) + int(num2)
except (ValueError):
print("Sorry, you cannot input a string.")
continue
else:
print(res)
break
10-8 cats and dogs
try:
with open("cats.txt") as obj:
for line in obj.readlines(): print(line)
with open("dogs.txt") as obj:
for line in obj.readlines(): print(line)
except FileNotFoundError:
print("This file doesn't exist.")
