#%% Change working directory from the workspace root to the ipynb file location. Turn this addition off with the DataScience.changeDirOnImportExport setting import os try: os.chdir(os.path.join(os.getcwd(), 'learning_note\python_code')) print(os.getcwd()) except: pass #%% '''计算一段字符串长度''' s1 = "hello world" length = 0 for i in s1: length = length+1 #每次循环增加一个数''' print(length) #打印出字符串长度数值''' #%% s2 = "hell eva" length = 0 for i in s2: length = length+1 print(length) #%% print(len(s1)) print(len(s2)) #%% def mylen(): s1 = "hello world" """计算s1的长度""" length = 0 for i in s1: length = length+1 return length #%% str_len = mylen() print('str_len : %s'%str_len) #%% def mylen(s1): """计算s1的长度""" length = 0 for i in s1: length = length+1 return length str_len = mylen("你好世界，我是新手！") print('str_len : %s'%str_len)