text: """Create User model
  
  Revision ID: 4f38526256fd
  Revises: 491f46f9e760
  Create Date: 2020-04-28 20:21:25.211389
  
  """
  from alembic import op
  import sqlalchemy as sa
  
  # revision identifiers, used by Alembic.
  revision = "4f38526256fd"
  down_revision = "491f46f9e760"
  branch_labels = None
  depends_on = None
  
  
  def upgrade():
      op.create_table(
          "user",
          sa.Column("id", sa.Integer(), nullable=False),
          sa.Column("username", sa.String(length=64), nullable=True),
          sa.Column("email", sa.String(length=120), nullable=True),
          sa.Column("password_hash", sa.String(length=128), nullable=True),
          sa.PrimaryKeyConstraint("id"),
      )
      op.create_index(op.f("ix_user_email"), "user", ["email"], unique=True)
      op.create_index(op.f("ix_user_username"), "user", ["username"], unique=True)
  
  
  def downgrade():
      op.drop_index(op.f("ix_user_username"), table_name="user")
      op.drop_index(op.f("ix_user_email"), table_name="user")
      op.drop_table("user")
  