Coverage for docs_src / tutorial / delete / tutorial002_py39.py: 100%

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1from typing import Optional 1jklmnopqr

2 

3from sqlmodel import Field, Session, SQLModel, create_engine, select 1jklmnopqr

4 

5 

6class Hero(SQLModel, table=True): 1jklmnopqr

7 id: Optional[int] = Field(default=None, primary_key=True) 1jklmnopqr

8 name: str = Field(index=True) 1jklmnopqr

9 secret_name: str 1jklmnopqr

10 age: Optional[int] = Field(default=None, index=True) 1jklmnopqr

11 

12 

13sqlite_file_name = "database.db" 1jklmnopqr

14sqlite_url = f"sqlite:///{sqlite_file_name}" 1jklmnopqr

15 

16engine = create_engine(sqlite_url, echo=True) 1jklmnopqr

17 

18 

19def create_db_and_tables(): 1jklmnopqr

20 SQLModel.metadata.create_all(engine) 1abcdefghi

21 

22 

23def create_heroes(): 1jklmnopqr

24 hero_1 = Hero(name="Deadpond", secret_name="Dive Wilson") 1abcdefghi

25 hero_2 = Hero(name="Spider-Boy", secret_name="Pedro Parqueador") 1abcdefghi

26 hero_3 = Hero(name="Rusty-Man", secret_name="Tommy Sharp", age=48) 1abcdefghi

27 hero_4 = Hero(name="Tarantula", secret_name="Natalia Roman-on", age=32) 1abcdefghi

28 hero_5 = Hero(name="Black Lion", secret_name="Trevor Challa", age=35) 1abcdefghi

29 hero_6 = Hero(name="Dr. Weird", secret_name="Steve Weird", age=36) 1abcdefghi

30 hero_7 = Hero(name="Captain North America", secret_name="Esteban Rogelios", age=93) 1abcdefghi

31 

32 with Session(engine) as session: 1abcdefghi

33 session.add(hero_1) 1abcdefghi

34 session.add(hero_2) 1abcdefghi

35 session.add(hero_3) 1abcdefghi

36 session.add(hero_4) 1abcdefghi

37 session.add(hero_5) 1abcdefghi

38 session.add(hero_6) 1abcdefghi

39 session.add(hero_7) 1abcdefghi

40 

41 session.commit() 1abcdefghi

42 

43 

44def update_heroes(): 1jklmnopqr

45 with Session(engine) as session: 1abcdefghi

46 statement = select(Hero).where(Hero.name == "Spider-Boy") 1abcdefghi

47 results = session.exec(statement) 1abcdefghi

48 hero_1 = results.one() 1abcdefghi

49 print("Hero 1:", hero_1) 1abcdefghi

50 

51 statement = select(Hero).where(Hero.name == "Captain North America") 1abcdefghi

52 results = session.exec(statement) 1abcdefghi

53 hero_2 = results.one() 1abcdefghi

54 print("Hero 2:", hero_2) 1abcdefghi

55 

56 hero_1.age = 16 1abcdefghi

57 hero_1.name = "Spider-Youngster" 1abcdefghi

58 session.add(hero_1) 1abcdefghi

59 

60 hero_2.name = "Captain North America Except Canada" 1abcdefghi

61 hero_2.age = 110 1abcdefghi

62 session.add(hero_2) 1abcdefghi

63 

64 session.commit() 1abcdefghi

65 session.refresh(hero_1) 1abcdefghi

66 session.refresh(hero_2) 1abcdefghi

67 

68 print("Updated hero 1:", hero_1) 1abcdefghi

69 print("Updated hero 2:", hero_2) 1abcdefghi

70 

71 

72def delete_heroes(): 1jklmnopqr

73 with Session(engine) as session: 1abcdefghi

74 statement = select(Hero).where(Hero.name == "Spider-Youngster") # (1)! 1abcdefghi

75 results = session.exec(statement) # (2)! 1abcdefghi

76 hero = results.one() # (3)! 1abcdefghi

77 print("Hero: ", hero) # (4)! 1abcdefghi

78 

79 session.delete(hero) # (5)! 1abcdefghi

80 session.commit() # (6)! 1abcdefghi

81 

82 print("Deleted hero:", hero) # (7)! 1abcdefghi

83 

84 statement = select(Hero).where(Hero.name == "Spider-Youngster") # (8)! 1abcdefghi

85 results = session.exec(statement) # (9)! 1abcdefghi

86 hero = results.first() # (10)! 1abcdefghi

87 

88 if hero is None: # (11)! 1abcdefghi

89 print("There's no hero named Spider-Youngster") # (12)! 1abcdefghi

90 # (13)! 

91 

92 

93def main(): 1jklmnopqr

94 create_db_and_tables() 1abcdefghi

95 create_heroes() 1abcdefghi

96 update_heroes() 1abcdefghi

97 delete_heroes() 1abcdefghi

98 

99 

100if __name__ == "__main__": 1jklmnopqr

101 main()