01月25日【Python3 基础知识】

# 读写文件
if __name__ == '__main__':
    fileName = input("输入文件名：")
    f = open(fileName, 'w', encoding="utf-8")
    while 1:
        context = input("context('EOF' will close)")
        if context == 'EOF':
            f.close()
            break
        else:
            f.write(context)
            f.write("\n")
    fRead = open(fileName, encoding="utf-8")
    readContext = fRead.read()
    print("############O###################")
    print(readContext)
    print("############X###################")
    fRead.close()

# G:\PYTHON_Pro\NO_1\Basics\file03\1.txt
ENCODING = "utf-8"
f = open("1.txt", encoding = ENCODING)
# name; 打印文件名
print(f.name)
print("2############")
# readline(); 按行读取
print(f.readline())
print(f.readline())
# readlines(); 以列表方式返回读取内容
print("3############")
print(f.readlines())
# close(); 直接打开文件需要关闭文件
f.close()
# with;这个方式打开文件会自动关闭。read()；读取文件所有内容
print("4############")
with open ("1.txt", "r", encoding = ENCODING) as f:
    print(f.read())

import codecs
file = ("ps.txt")
sortFile = "sortps.txt"
fileContext = []
sortUid = []
with codecs.open(sortFile, "w") as fsort:
    with codecs.open(file, encoding="utf-8") as f:
        fileContext += f.readlines()
        for line in fileContext:
            sortUid.append(int(line.split(":")[2]))
        sortUid.sort()
        for uid in sortUid:
            for line in fileContext:
                if str(uid) == line.split(":")[2]:
                    print(line.strip("\n"))
                    fsort.write(line.strip("\n"))