diff --git a/language_learning/2022.02.16_change_directory_by_replacement/change_directory_by_replacement _with_guan.py b/language_learning/2022.02.16_change_directory_by_replacement/change_directory_by_replacement _with_guan.py
new file mode 100644
index 0000000..072d40c
--- /dev/null
+++ b/language_learning/2022.02.16_change_directory_by_replacement/change_directory_by_replacement _with_guan.py	
@@ -0,0 +1,4 @@
+import guan
+guan.change_directory_by_replacement(current_key_word='codes', new_key_word='data')
+with open('data.txt', 'w') as f: # 保存数据
+    f.write('Hello world') 
\ No newline at end of file
diff --git a/language_learning/2022.02.16_change_directory_by_replacement/change_directory_by_replacement.py b/language_learning/2022.02.16_change_directory_by_replacement/change_directory_by_replacement.py
new file mode 100644
index 0000000..602f441
--- /dev/null
+++ b/language_learning/2022.02.16_change_directory_by_replacement/change_directory_by_replacement.py
@@ -0,0 +1,10 @@
+import os
+
+code_path = os.getcwd() # 查看当前代码文件的路径
+data_path = code_path.replace('\\', '/')  # \改为/，防止路径报错
+data_path = code_path.replace('codes', 'data') # 把路径中codes改为data
+if os.path.exists(data_path) == False: # 如果文件夹不存在，新建文件夹
+    os.makedirs(data_path)
+os.chdir(data_path) # 转到数据的存放路径
+with open('data.txt', 'w') as f: # 保存数据
+    f.write('Hello world') 
\ No newline at end of file