ubuntu 安装pyqt5和卸载pyQt5的方法
安装pyqt5
wind@wind-ThinkPad-X250:~/Downloads/PyQt5_gpl-5.12.2$python3-mpipinstallPyQt5 CollectingPyQt5 Downloadinghttps://files.pythonhosted.org/packages/6a/f4/6a63aafcee3efd2b156dc835d9c85ca99b24e80f8af89b6da5c46054fe43/PyQt5-5.12.2-5.12.3-cp35.cp36.cp37.cp38-abi3-manylinux1_x86_64.whl(61.5MB) 100%|████████████████████████████████|61.5MB18kB/s CollectingPyQt5_sip<13,>=4.19.14(fromPyQt5) Downloadinghttps://files.pythonhosted.org/packages/08/19/ef6b97cfdbb8f9312d71388384f572706e40bf88f07fffb0fc64846b4a36/PyQt5_sip-4.19.17-cp35-cp35m-manylinux1_x86_64.whl(67kB) 100%|████████████████████████████████|71kB107kB/s Installingcollectedpackages:PyQt5-sip,PyQt5 SuccessfullyinstalledPyQt5-5.12.2PyQt5-sip-4.19.17 Youareusingpipversion8.1.1,howeverversion19.1.1isavailable. Youshouldconsiderupgradingviathe'pipinstall--upgradepip'command. wind@wind-ThinkPad-X250:~/Downloads/PyQt5_gpl-5.12.2$
查看python所有的安装包
>>>importsys >>>sys.modules.keys() dict_keys(['problem_report','_bz2','email.feedparser','email.mime','base64','select','tarfile','__future__','_compat_pickle','importlib.util','mpl_toolkits','json.scanner','signal','json','re','subprocess','ipaddress','configparser','_functools','bz2','uu','pyexpat','copyreg','__main__','selectors','apt.package','PyQt5','xml','pyexpat.errors','_json','_thread','email.message','apt.cdrom','calendar','importlib.abc','textwrap','random','email.mime.text','email._encoded_words','email._parseaddr','shutil','atexit','sre_parse','_frozen_importlib_external','importlib.machinery','_compression','zlib','copy','fcntl','_weakref','sitecustomize','collections.abc','apport_python_hook','email.header','email.errors','_io','_operator','email.encoders','_string','contextlib','_frozen_importlib','_pickle','apt.cache','token','_signal','_collections_abc','email._policybase','apt.progress','encodings.utf_8','genericpath','_hashlib','heapq','_socket','_stat','site','sysconfig','xml.dom.minicompat','socket','_struct','string','email.charset','importlib','pyexpat.model','gzip','codecs','_warnings','apport.packaging_impl','threading','encodings','builtins','enum','binascii','http','itertools','operator','_ssl','xml.parsers.expat','_datetime','glob','_locale','_random','apport.fileutils','xml.dom.NodeFilter','_posixsubprocess','abc','urllib.error','datetime','sre_constants','json.encoder','encodings.aliases','reprlib','_weakrefset','json.decoder','importlib._bootstrap_external','sre_compile','email.mime.base','email.parser','math','keyword','encodings.latin_1','linecache','_heapq','urllib','apport','tokenize','importlib._bootstrap','urllib.response','xml.parsers.expat.errors','apport.report','apport.packaging','posixpath','gettext','xml.dom.xmlbuilder','xml.dom','pwd','os','_sysconfigdata_m','_sitebuiltins','errno','xml.parsers.expat.model','os.path','_sysconfigdata','_sre','email.mime.multipart','collections','apt.progress.base','traceback','apt','io','weakref','urllib.request','hashlib','email.iterators','quopri','http.client','zipimport','_imp','sys','rlcompleter','_bootlocale','locale','urllib.parse','fnmatch','tempfile','xml.dom.domreg','_codecs','bisect','email.utils','email.mime.nonmultipart','_bisect','stat','warnings','ssl','functools','email','grp','_lzma','email.quoprimime','struct','apt.progress.text','time','xml.parsers','email.base64mime','apt_pkg','pickle','imp','types','xml.dom.minidom','lzma','marshal','_collections','readline','posix']) >>>
删除pyqt5安装包
wind@wind-ThinkPad-X250:~$sudopython3-mpipuninstallPyQt5 [sudo]passwordforwind: WARNING:Thedirectory'/home/wind/.cache/pip/http'oritsparentdirectoryisnotownedbythecurrentuserandthecachehasbeendisabled.Pleasecheckthepermissionsandownerofthatdirectory.Ifexecutingpipwithsudo,youmaywantsudo's-Hflag. UninstallingPyQt5-5.12.2: Wouldremove: /home/wind/.local/bin/pylupdate5 /home/wind/.local/bin/pyrcc5 /home/wind/.local/bin/pyuic5 /home/wind/.local/lib/python3.5/site-packages/PyQt5-5.12.2.dist-info/* /home/wind/.local/lib/python3.5/site-packages/PyQt5/* Wouldnotremove(mightbemanuallyadded): /home/wind/.local/lib/python3.5/site-packages/PyQt5/sip.so Proceed(y/n)?y SuccessfullyuninstalledPyQt5-5.12.2 wind@wind-ThinkPad-X250:~$
使用例子
#!/bin/envpython3
#-*-coding:utf-8-*-
importsys
fromPyQt5.QtWidgetsimportQApplication,QWidget#导入相应的包
if__name__=='__main__':
app=QApplication(sys.argv)#创建QApplication对象是必须，管理整个>程序，参数可有可无，有的话可接收命令行参数
w=QWidget()#创建窗体对象，
w.resize(250,150)#设置窗体大小
w.move(100,300)#设置在屏幕上的显示位置
w.setWindowTitle('Simple')#设置窗口标题
w.show()#窗口显示
sys.exit(app.exec_())
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