What are the basic operations of python sequences
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Create sequence syntax:
Variable name = {}
Dict= {}
Variable name = []
List01= []
Variable name = () immutable
Tuple01= ()
Variable name = value
Str='123'
Note: except Yuanzu, all the sequences can have the function of adding, deleting, modifying and searching.
# add dictionaries
Stu_info= {'num':'001','name':' Yuan Tiangang', 'sex':' male'}
Stu_info ['age'] =' 78'
Print (stu_info)
# list
List01= ['002' Li Chunfeng', 'male']
List01.append (64)
Print (list01)
# string
Str01='003\ t Wu Zetian\ t female'
Str01='003\ t Wu Zetian\ t female\ t59'
Print (str01)
# Delete
# Dictionary
Stu_info= {'num':'001','name':' Yuan Tiangang', 'sex':' male'}
Del stu_info ['sex']
Print (stu_info)
# list
List01= ['002' Li Chunfeng', 'male']
Del list01 [2]
Print (list01)
# string
Str01='003\ t Wu Zetian\ t female'
Str01='003\ t Wu Zetian'
Print (str01)
# change
# Dictionary
Stu_info= {'num':'001','name':' Yuan Tiangang', 'sex':' male'}
Stu_info.update ({'sex':' female'})
Print (stu_info)
# list
List01= ['002' Li Chunfeng', 'male']
List01 [2] = 'unknown'
Print (list01)
# string
Str01='003\ t Wu Zetian\ t female'
Str01='003\ t Wu Zetian\ t male'
Print (str01)
Comprehensive case demonstration: making student information management system
Nameinfo= []
Def printMemu ():
Print ("20")
Print ("= = Student Management system V1.0 students =")
Print ("20")
Print ("1: add student information")
Print ("2: delete student information")
Print ("3: show student information")
Print ("4: exit the system")
Def add ():
Num=input ("Please enter student ID:")
Nmae=input ("Please enter student name:")
Sex=input ("Please enter student gender (male / female)")
NewInfo= {}
NewInfo ['num'] = num
NewInfo ['name'] = nmae
NewInfo ['sex'] = sex
Nameinfo.append (newInfo)
Print (nameinfo)
Def show ():
Print ("20")
Print ("Student information is as follows:")
Print ("20")
Print (nameinfo)
Def delete ():
Del_num=input ("Please enter the student ID to delete:")
For i in nameinfo:
If I ['num'] = = del_num:
Nameinfo.remove (I)
While True:
PrintMemu ()
Chose=int (input ("Please enter the number corresponding to the function"))
If (chose==1):
Print ("1: add student information")
Add ()
If (chose==2): print ("2: delete student information") delete () if (chose==3): print ("3: display student information") show () if (chose==4): print ("4: quit the system") break Thank you for reading! This is the end of this article on "what are the basic operations of python sequences?". I hope the above content can be of some help to you, so that you can learn more knowledge. if you think the article is good, you can share it for more people to see!
