jupyter run
import sys
print(type(sys.path))
try:
sys.path=sys.path.append("test")
except Exception as e:
print(e)
print(sys.path) < class" list" >
None
jupyter run
import sys
print(type(sys.path))
try:
sys.path=sys.path.append("test")
except Exception as e:
print(e)
print(sys.path) < class" list" >
None
In [1]: import sys
In [2]: sys.path
Out[2]:
['',
'D:\\Program Files\\Python36\\Scripts\\ipython.exe',
'd:\\program files\\python36\\python36.zip',
'd:\\program files\\python36\\DLLs',
'd:\\program files\\python36\\lib',
'd:\\program files\\python36',
'C:\\Users\\Jam\\AppData\\Roaming\\Python\\Python36\\site-packages',
'd:\\program files\\python36\\lib\\site-packages',
'd:\\program files\\python36\\lib\\site-packages\\win32',
'd:\\program files\\python36\\lib\\site-packages\\win32\\lib',
'd:\\program files\\python36\\lib\\site-packages\\Pythonwin',
'd:\\program files\\python36\\lib\\site-packages\\IPython\\extensions',
'C:\\Users\\Jam\\.ipython']
In [3]: sys.path.append('test')
In [4]: sys.path
Out[4]:
['',
'D:\\Program Files\\Python36\\Scripts\\ipython.exe',
'd:\\program files\\python36\\python36.zip',
'd:\\program files\\python36\\DLLs',
'd:\\program files\\python36\\lib',
'd:\\program files\\python36',
'C:\\Users\\Jam\\AppData\\Roaming\\Python\\Python36\\site-packages',
'd:\\program files\\python36\\lib\\site-packages',
'd:\\program files\\python36\\lib\\site-packages\\win32',
'd:\\program files\\python36\\lib\\site-packages\\win32\\lib',
'd:\\program files\\python36\\lib\\site-packages\\Pythonwin',
'd:\\program files\\python36\\lib\\site-packages\\IPython\\extensions',
'C:\\Users\\Jam\\.ipython',
'test']list will not return a value, but will directly operate list
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