os模块
一、导入方式
import os
二、作用
与操作系统交互,可以操控文件
三、模块功能
3.1 经常使用
os.listdir():列出所有文件
print(os.listdir()) #列出所有文件 ---------------------------------------------------------- ['12.txt', '123', 'a.txt', 'access.log', 'db.txt', 'db.txt.swap', 'LeetCode.py']
os.rename() :重命名
os.remove() :删除
os.rename('m2.py','m1.py') #重命名m2.py os.remove('m2.py') #删除m2.py --------------------------------------------------------------
os.path.join():拼接文件路径(支持不同平台)
res = os.path.join(r'E:\python上海学习\02上课认真听讲\老师讲的内容\0816\04 os模块.py','m5.py') # 拼接文件路径 res = os.path.join(r'E:\python上海学习\02上课认真听讲\老师讲的内容\0816\04 os模块.py'm5','test.py') # 拼接多个文件路径 -------------------------------------------------------------
os.path.abspath():返回文件规范化的绝对路径
os.path.abspath(__file__) #返回文件的绝对路径 os.path.dirname(os.path.dirname(os.path.abspath(__file__))) #返回文件的上级目录的路径
3.1 一般使用
使用模块 | 功能 |
---|---|
os.getcwd() | 获取当前文件目录 |
os.mkdir('m2') | 创建一个m2的文件夹 |
os.rmdir('m2') | 删除m2文件夹 |
os.path.abspath(__file__) | 支持不同的平台(windows,ios,andirod等) |
os.path.exists('01 包.py') | 文件不存在False,存在True |
os.path.isfile('01 包.py') | 是否为文件 |
os.path.isdir('01 包.py') | 是否为文件夹 |
import os g = os.walk(r'绝对路径。。。。') # 返回三个值,第一个值是路径;第二个值是路径下的文件夹,第三个值是路径下的文件 for i in g: print(i)
四、计算函数代码
import os import sys def count_code(path): # path == '文件的绝对路径' count = 0 flag = True if os.path.isdir(path): for dir, _, file_path_list in os.walk(path): for file_path in file_path_list: try: file_path = os.path.join(dir, file_path) path_list = file_path.split('.') file_count = 0 if path_list[-1] == 'py': with open(file_path, 'r', encoding='utf8') as fr: for line in fr: if (line.startswith('\'\'\'') or line.startswith('\"\"\"')) and flag: flag = False continue elif ('=' in line and ('\'\'\'' in line or '\"\"\"' in line)) and flag: flag = False continue elif (line.startswith('\'\'\'') or line.startswith('\"\"\"')) and not flag: flag = True continue if line.startswith('#') and flag: continue elif line == '\n' and flag: continue elif flag: count += 1 file_count += 1 print(f'{file_path}有{file_count}行') except Exception: print(f'该文件{file_path}有问题') continue elif os.path.isfile(path): path_list = path.split('.') if path_list[-1] == 'py': file_count = 0 with open(path, 'r', encoding='utf8') as fr: for line in fr: if (line.startswith('\'\'\'') or line.startswith('\"\"\"')) and flag: flag = False continue elif ('=' in line and ('\'\'\'' in line or '\"\"\"' in line)) and flag: flag = False continue elif (line.startswith('\'\'\'') or line.startswith('\"\"\"')) and not flag: flag = True continue if line.startswith('#') and flag: continue elif line == '\n' and flag: continue elif flag: count += 1 file_count += 1 print(f'{path}有{file_count}行') else: print('不是py文件') return count if __name__ == '__main__': # file_path = sys.argv[1] # count = count_code(file_path) count = count_code('文件(文件夹)绝对路径') print(count)