文件和异常练习2——PYTHON编程从入门到实践

标签：sha   而不是   文件中   一个   pen   编写   实践   str   oom   

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print("Enter two numbers, and I‘ll add them.")first_number = input("\nFirst number: ")second_number = input("Second number: ")try:    nums_sum = int(first_number) + int(second_number)    print(first_number + ‘+‘ + second_number + ‘=‘ + str(nums_sum))except ValueError:    print("Sorry! Only accept numbers input.")[url=][/url]

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print("Enter two numbers, and I‘ll add them.")print("Enter ‘q‘ to quit.")while True:    first_number = input("\nFirst number: ")    if first_number == ‘q‘:        break    second_number = input("Second number: ")    if second_number == ‘q‘:        break    try:        nums_sum = int(first_number) + int(second_number)        print(first_number + ‘+‘ + second_number + ‘=‘ + str(nums_sum))    except ValueError:        print("Sorry! Only accept numbers input.")[url=][/url]

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file_names = [‘cats.txt‘, ‘dogs.txt‘]for filename in file_names:    try:        with open(filename) as f_obj:            names = f_obj.read()            print(filename + " include:\n" + names.rstrip())    except FileNotFoundError:        print("Sorry, the file " + filename + " can not fond.")[url=]

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file_names = [‘cats.txt‘, ‘dogs.txt‘]for filename in file_names:    try:        with open(filename) as f_obj:            names = f_obj.read()            print(filename + " include:\n" + names.rstrip())    except FileNotFoundError:        pass[url=]

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文件和异常练习2——PYTHON编程从入门到实践

标签：sha   而不是   文件中   一个   pen   编写   实践   str   oom   

原文地址：https://www.cnblogs.com/heimaguangzhou/p/11775083.html