Python学习笔记-3

"""逐行读取"""
filename = 'pi_digits.txt'
with open(filename) as file_object:
    for line in file_object:
        print(line.rstrip())

""""判断生日是否在Π中"""
filename = 'pi_digits.txt'
pi_string = ''
with open(filename) as file_object:
    lines = file_object.readlines()
for line in lines:
    """将几行数字合为一个字符串"""
    pi_string += line.strip()
birthday = input("Enter your birthday,in the form mmddyy:")
if birthday in pi_string:
    print("Your birthday appears in the digits.")
else:
    print("your birthday does not appear in the digits.")

filename = 'pi_digits1.txt'
with open(filename,'w') as file_object:
    file_object.write("Hello World!")

"""处理ZeroDivisionError异常"""
try:
    print(5/0)
except ZeroDivisionError:
    print("You can't divide by zero!")
else：
  print(answer)

title = "Alice in Wonderland in"
print(title.split())

def count_word(name):
    """计算一个文件大致包含多少个单词"""
    try:
        with open(name, encoding='utf-8') as f:
            contents = f.read()
    except FileNotFoundError:
        print(f"Sorry,the file {name} does not exist.")
    else:
        words = contents.split()#split可以根据一个字符串创建一个单词列表。 
        num_words = len(words)
        print(f"The file {name} has about {num_words} words.")
filenames = ['alice.txt', 'siddhartha.txt', 'moby_dick.txt', 'little_women.txt']
for filename in filenames:
    count_word(filename)

import json
numbers = [2, 3, 5, 7, 11, 13]
filename = 'numbers.json'
with open(filename, 'w') as f:
    json.dump(numbers,f)

import json
filename = 'numbers.json'
with open(filename) as f:
    numbers = json.load(f)
print(numbers)

import json
# 如果以前存储了用户名，就加载它。
# 否则，提示用户输入用户名并存储它。
filename = 'username.json'
try:
    with open(filename) as f:
        username = json.load(f)
except FileNotFoundError:
    username = input("What is your name?")
    with open(filename, 'w') as f:
        json.dump(username, f)
        print(f"We will remember you when you come back,{username}!")
else:
    print(f"Welcome back,{username}!")

import json
def get_stored_username():
    """如果存储了用户名，就获取它"""
    filename = 'username.json'
    try:
        with open(filename) as f:
            username = json.load(f)
    except FileNotFoundError:
        return None
    else:
        return username
def get_new_username():
    """提示用户输入用户名"""
    username = input("What is your name?")
    filename = 'username.json'
    with open(filename, 'w') as f:
        json.dump(username, f)
    return username
def greet_user():
    """"问候用户，并指出其名字"""
    username = get_new_username()
    if username:
        print(f"Welcome back,{username}!")
    else:
        username = get_new_username()
        print(f"We will remember you when you come back,{username}!")
greet_user()

"""name_function"""
def get_formatted_name(first, last, middle=""):
    """生成姓名"""
    if middle:
        full_name = f"{first} {middle} {last}"
    else:
        full_name = f"{first} {last}"
    return full_name.title()

import unittest
from survey import AnonymousSurvey
class TestAnonymousSurvey(unittest.TestCase):
    def setUp(self):
        """
        创建一个调查对象和一组答案，供使用的测试方法使用
        """
        question = "What language did you first learn to speak?"
        self.my_survey = AnonymousSurvey(question)
        self.responses = ['English', 'Spanish', 'Mandarin']
    def test_store_single_response(self):
        self.my_survey.store_response(self.responses[0])
        self.assertIn(self.responses[0], self.my_survey.responses)
    def test_store_three_response(self):
        for response in self.responses:
            self.my_survey.store_response(response)
        for response in self.responses:
            self.assertIn(response, self.my_survey.responses)
if __name__ == '__main__':
    unittest.main()

import unittest
from survey import AnonymousSurvey
class TestAnonymousSurvey(unittest.TestCase):
    def setUp(self):
        """
        创建一个调查对象和一组答案，供使用的测试方法使用
        """
        question = "What language did you first learn to speak?"
        self.my_survey = AnonymousSurvey(question)
        self.responses = ['English', 'Spanish', 'Mandarin']
    def test_store_single_response(self):
        self.my_survey.store_response(self.responses[0])
        self.assertIn(self.responses[0], self.my_survey.responses)
    def test_store_three_response(self):
        for response in self.responses:
            self.my_survey.store_response(response)
        for response in self.responses:
            self.assertIn(response, self.my_survey.responses)
if __name__ == '__main__':
    unittest.main()