Part 2-1 employee info, part2-1 employee info

Part 2-1 employee info, part2-1 employee info

README:

1. add, delete, modify, and query the employee information table program:

1) fuzzy query is supported. The syntax must be at least three:
Select name, age from staff_table where age> 22
Select * from staff_table where dept = "IT"
Select * from staff_table where enroll_date like "2013"
Finally, the number of items found is displayed.
2). You can create new employee records and use phone as the unique key. staff_id must be auto-incrementing.
3). You can delete a specified employee information record and enter the employee id to delete it.
4) The employee information can be modified. The syntax is as follows:
UPDATE staff_table SET dept = "Market" WHERE dept = "IT"

Flowchart:

 

Code:

# Coding: utf8import sysimport redef select (staff, field): cmd = input ("cmd> "). strip () cmd = cmd. replace ('from', 'from') cmd = cmd. replace ('where', 'where') if '*' in cmd: for I in field. keys (): sys. stdout. write (str (I) + '') print ('') for line in staff: info_list = re. split (R', + ', line. strip ('\ n') returns _list = re. split (R' [,;] + ', cmd) f_index = pai_list.index ('from') search_field = pai_list [1: f_inde X] from_field = performance_list [f_index + 1] if from_field! = 'Staff _ table': print ('\ 033 [31; 1 mplease select 'staff _ table '... \ 033 [0m') break if 'where' not in exist _list: # The where condition does not exist. Display All view_list = [] for I in range (len (search_field )): if search_field [I] = '*': view_list = info_list [:] else: view_list.append (info_list [field. get (search_field [I]) else: print (','. join (view_list) else: # The where condition w_index = pai_list.index ('where') where_str = ''. join (ipv_li St [w_index + 1:]) if re. search (r 'like', where_str): sizeof = 'like' where_list = re. split (r 'like', where_str) else: sizeof = re. search (R' [=> <] + ', where_str ). group () where_list = re. split (R' [=> <] + ', where_str) where_field = where_list [0] value = where_list [1] if re. search (R' [\ '\ "] +', value): # contains the 'and" representation characters, and processes' and "value = value. replace ('\ "','') value = value. replace ('\ '','') else: value = float (value) # Print (where_str, where_field, sizeof, value) # condition judgment>, <, =, like if sizeof = '>': v = info_list [field. get (where_field)] if float (v)> value: view_list = [] for I in range (len (search_field): if search_field [I] = '*': view_list = info_list [:] else: view_list.append (info_list [field. get (search_field [I]) else: print (','. join (view_list) elif sizeof = '<': v = info_list [field. get (where_field)] If float (v) <value: view_list = [] for I in range (len (search_field): if search_field [I] = '*': view_list = info_list [:] else: view_list.append (info_list [field. get (search_field [I]) else: print (','. join (view_list) elif sizeof = ': v = info_list [field. get (where_field)] if field. get (where_field) = 2: v = float (v) if v = value: view_list = [] for I in range (len (search_field): if search_fi Eld [I] = '*': view_list = info_list [:] else: view_list.append (info_list [field. get (search_field [I]) else: print (','. join (view_list) elif sizeof = 'like': v = info_list [field. get (where_field)] if value in v: view_list = [] for I in range (len (search_field): if search_field [I] = '*': view_list = info_list [:] else: view_list.append (info_list [field. get (search_field [I]) else: print (','. join (view _ List) else: passdef add (staff): staff. sort () num = int (re. split (R', ', staff [-1]) [0]) + 1 phone = input ("phone :"). strip () for line in staff: if phone = line [3]: print ("already exists... ") return False if not re. match (R' ^ \ d + $ ', phone) or len (phone) <7: print ("format error... ") return False name = input (" name :"). strip () age = input ("age :"). strip () dept = input ("dept :"). strip () enroll_date = input ("Enroll_date :"). strip () for s in (name, age, dept, enroll_date): if not len (s): print ("input is null... ") return False else: staff. append ('% s, % s \ n' % (num, name, age, phone, dept, enroll_date )) return staffdef update (staff, field): cmd = input ("cmd> "). strip () up_list = [] cmd = cmd. replace ('set', 'set') cmd = cmd. replace ('where', 'where') for line in staff: info_list = re. split (R', + ', Line. strip ('\ n') into _list = re. split (R' [,;] +', cmd) if exist _list [1]! = 'Staff _ table': print ('\ 033 [31; 1 mplease update 'staff _ table '... \ 033 [0m') break set_index = pai_list.index ('set') where_index = pai_list.index ('where') set_list = re. split (R' = ',''. join (performance_list [set_index + 1: where_index]) set_field = set_list [0] set_value = set_list [1] if re. search (R' [\ '\ "] +', set_value): set_value = set_value.replace ('\'', '') set_value = set_value.replace ('\"','') where_list = re. split (R' = ',''. join (performance_list [where_index + 1:]) where_field = where_list [0] where_value = where_list [1] if re. search (R' [\ '\ "] +', where_value): where_value = where_value.replace ('\'', '') where_value = where_value.replace ('\"','') if info_list [field. get (where_field)] = where_value: info_list [field. get (set_field)] = set_value print (','. join (info_list) up_list.append (','. join (info_list) else: return up_listdef delete (staff): del_id = input ("delete id :"). strip () for I in range (len (staff): if re. split (R', ', staff [I]) [0] = del_id: staff. pop (I) print ("id: % s delete success. "% del_id) return staff else: return Falsedef main (): staff_table = 'staff_table.txt 'field = {'staff _ id': 0, 'name': 1, 'age ': 2, 'phone': 3, 'dept': 4, 'roll _ date': 5} menu = ''' \ 033 [33; 1 m -- staff_table -- \ 033 [0m \ 033 [29; 1 mS. query h. help. add q. exit E. modify D. delete \ 033 [0m''' print (menu) while True: try: with open (staff_table, 'R') as f: staff = f. readlines () choice = input ("> "). strip (). lower () if choice = 'H': # help print (menu) elif choice = 'q': break elif choice = 's': # search select (staff, field) elif choice = 'A': # add result = add (staff) if not result: print ('\ 033 [31; 1 madd failed... \ 033 [0m') continue else: with open (staff_table, 'w') as f: f. writelines (result) elif choice = 'E': # update result = update (staff, field) if not result: print ('\ 033 [31; 1 mupdate failed... \ 033 [0m') continue else: with open (staff_table, 'w') as f: for line in result: f. write (line + '\ n') elif choice = 'D': # delete result = delete (staff) if not result: print (' \ 033 [31; 1 mdelete failed... \ 033 [0m') continue else: with open (staff_table, 'w') as f: f. writelines (result) else: continue failed T: print ("\ 033 [31; 1 minput error... \ 033 [0 m ") continueif _ name _ = '_ main _': main ()

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