一.tensorflow 安装路径和安装版本查询：
（win10，python3.5，tensorflow1.05）
使用命令：
PS C:\Users\a1104> python
Python 3.5.2rc1 (v3.5.2rc1:68feec6488b2+, Jun 12 2016, 08:56:24) [MSC v.1900 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import tensorflow as tf
>>> tf.__version__ #双下划线
'1.5.0'
>>>
>>> tf.__path__ #双下划线
['C:\\python\\lib\\site-packages\\tensorflow']
>>>注意：上面是双下划线
错误命令演示
>>> import tensorflow as tf
>>> tf._ _version_ _
File "<stdin>", line 1
tf._ _version_ _ #此处多加了空格
^
SyntaxError: invalid syntax>>> import tensorflow as tf
>>> tf._path_ #此处只有一个下划线
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
AttributeError: module 'tensorflow' has no attribute '_path_'
>>> import tensorflow as tf
>>> tf._version_ #此处只有一个下划线
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
AttributeError: module 'tensorflow' has no attribute '_version_'扩展：
二.如何查看python的安装路径：
PS C:\Users\a1104> python
Python 3.5.2rc1 (v3.5.2rc1:68feec6488b2+, Jun 12 2016, 08:56:24) [MSC v.1900 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import sys
>>> print(sys.path)
['', 'C:\\python\\python35.zip', 'C:\\python\\DLLs', 'C:\\python\\lib', 'C:\\python', 'C:\\python\\lib\\site-packages']如何查看python中安装的模块：##
如何想知道自己import的模块所在的位置可以用这种方法，和方法一类似
>>> import tensorflow
>>> print tensorflow.__file__
File "<stdin>", line 1
print tensorflow.__file__
^
SyntaxError: Missing parentheses in call to 'print'
>>> print (tensorflow.__file__)
C:\python\lib\site-packages\tensorflow\__init__.py
>>>
如何查看python中已经安装的库：
>>> help('modules')
Please wait a moment while I gather a list of all available modules...
__future__ antigravity idlelib shlex
_ast argparse imaplib shutil
_bisect array imghdr signal
_bootlocale ast imp site
_bz2 asynchat importlib six
_codecs asyncio inspect smtpd
_codecs_cn asyncore io smtplib
_codecs_hk atexit ipaddress sndhdr
_codecs_iso2022 audioop itertools socket
_codecs_jp base64 json socketserver
_codecs_kr bdb keyword sqlite3
_codecs_tw binascii lib2to3 sre_compile
_collections binhex linecache sre_constants
_collections_abc bisect locale sre_parse
_compat_pickle bleach logging ssl
_compression builtins lzma stat
_csv bz2 macpath statistics
_ctypes cProfile macurl2path string
_ctypes_test calendar mailbox stringprep
_datetime cgi mailcap struct
_decimal cgitb markdown subprocess
_dummy_thread chunk marshal sunau
_elementtree cmath math symbol
_functools cmd mimetypes symtable
_hashlib code mmap sys
_heapq codecs modulefinder sysconfig
_imp codeop msilib tabnanny
_io collections msvcrt tarfile
_json colorsys multiprocessing telnetlib
_locale compileall netrc tempfile
_lsprof concurrent nntplib tensorboard
_lzma configparser nt tensorflow
_markupbase contextlib ntpath test
_md5 copy nturl2path textwrap
_msi copyreg numbers this
_multibytecodec crypt numpy threading
_multiprocessing csv opcode time
_opcode ctypes operator timeit
_operator curses optparse tkinter
_osx_support datetime os token
_overlapped dbm parser tokenize
_pickle decimal pathlib trace
_pydecimal difflib pdb traceback
_pyio dis pickle tracemalloc
_random distutils pickletools tty
_sha1 doctest pip turtle
_sha256 dummy_threading pipes turtledemo
_sha512 easy_install pkg_resources types
_signal email pkgutil typing
_sitebuiltins encodings platform unicodedata
_socket ensurepip plistlib unittest
_sqlite3 enum poplib urllib
_sre errno posixpath uu
_ssl faulthandler pprint uuid
_stat filecmp profile venv
_string fileinput pstats warnings
_strptime fnmatch pty wave
_struct formatter py_compile weakref
_symtable fractions pyclbr webbrowser
_testbuffer ftplib pydoc werkzeug
_testcapi functools pydoc_data wheel
_testimportmultiple gc pyexpat winreg
_testmultiphase genericpath queue winsound
_thread getopt quopri wsgiref
_threading_local getpass random xdrlib
_tkinter gettext re xml
_tracemalloc glob reprlib xmlrpc
_warnings gzip rlcompleter xxsubtype
_weakref hashlib runpy zipapp
_weakrefset heapq sched zipfile
_winapi hmac select zipimport
abc html selectors zlib
absl html5lib setuptools
aifc http shelve
Enter any module name to get more help. Or, type "modules spam" to search
for modules whose name or summary contain the string "spam".
>>>