三週一次課（10月30日）、三週二次課（10月31日）
複習上週的內容
要求如下：
1. 把一個數字的list從小到大排序，然後寫入文件，然後從文件中讀取出來文件內容，然後反序，在追加到文件的下一行中
list1 = [1, 2, 33, 50, 78, 99, 4, 83, 43, 111]
list1.sort()
with codecs.open('test.txt', 'wb') as file1:
file1.write(str(list1))
with codecs.open('test.txt', 'rb') as file2:
list2 = file2.read()
list2 = eval(list2)
with codecs.open('test.txt', 'ab') as file2:
list2.reverse()
str2 = ('\n' + str(list2))
file2.write(str2)結果：
[1, 2, 4, 33, 43, 50, 78, 83, 99, 111] [111, 99, 83, 78, 50, 43, 33, 4, 2, 1]
2、分別把 string， list， tuple， dict寫入到文件中
2.1把string寫入到文件中
import codecs
string = "hello world!"
with codecs.open('test.txt', 'wb') as file1:
file1.write(string)
with codecs.open("test.txt", "rb") as file1:
print(file1.read())結果：
hello world!
2.2把list寫入到文件中
import codecs
list1 = ["ni\n", "hao\n", "ma\n"]
with codecs.open('test.txt', 'wb') as file1:
file1.writelines(list1)
with codecs.open("test.txt", "rb") as file1:
print(file1.read())結果：
ni hao ma
2.3把tuple寫入到文件中
import codecs
tuple1 = ("ni", " hao", " ma", "?")
with codecs.open('test.txt', 'wb') as file1:
file1.writelines(tuple1)
with codecs.open("test.txt", "rb") as file1:
print(file1.read())結果：
ni hao ma?
2.4把dict寫入到文件中
import codecs
dict1 = {"name": "wan yang", "age": "20", "height": "175"}
with codecs.open('test.txt', 'wb') as file1:
for i in dict1.iterkeys():
file1.write(i + ": "+dict1.get(i)+"\n")
with codecs.open("test.txt", "rb") as file1:
print(file1.read())結果：
age: 20 name: wan yang height: 175