PythonParser adds new lines between elements.

[traceyyoshima]

Note: This might caused by IntelliJUtils during the PSI generation and not the PsiPythonMapper. A comparison between the PSI generated by IntelliJ tests and the PSI generated by IntelliJUtils revealed whitespace elements that did not exist in IntelliJ's output.

    @Test
    void test() {
        rewriteRun(
          python(
            """
              from django.db import models
              from django.db.models import QuerySet
              from django.db.models.manager import BaseManager
              from django.urls import reverse

              class Artist(models.Model):
                  name = models.CharField(max_length=100)

                  class Meta:
                      ordering = ["name"]
                      verbose_name = "professional artist"
                      verbose_name_plural = "professional artists"

                  def __str__(self):
                      return self.name

                  def get_absolute_url(self):
                      return reverse("artist_detail", kwargs={"pk": self.id})

              class Author(models.Model):
                  name = models.CharField(max_length=100)
                  slug = models.SlugField()

                  class Meta:
                      ordering = ["name"]

                  def __str__(self):
                      return self.name

              class DoesNotExistQuerySet(QuerySet):
                  def get(self, *args, **kwargs):
                      raise Author.DoesNotExist

              DoesNotExistBookManager = BaseManager.from_queryset(DoesNotExistQuerySet)

              class Book(models.Model):
                  name = models.CharField(max_length=255)
                  slug = models.SlugField()
                  pages = models.IntegerField()
                  authors = models.ManyToManyField(Author)
                  pubdate = models.DateField()

                  objects = models.Manager()
                  does_not_exist = DoesNotExistBookManager()

                  class Meta:
                      ordering = ["-pubdate"]

                  def __str__(self):
                      return self.name

              class Page(models.Model):
                  content = models.TextField()
                  template = models.CharField(max_length=255)

              class BookSigning(models.Model):
                  event_date = models.DateTimeField()
              """
          )
        );
    }

output:

  from django.db import models
  from django.db.models import QuerySet
  from django.db.models.manager import BaseManager
  from django.urls import reverse

  class Artist(models.Model):
      name = models.CharField(max_length=100)

      class Meta:
          ordering = ["name"]
          verbose_name = "professional artist"
          verbose_name_plural = "professional artists"

      def __str__(self):
          return self.name

      def get_absolute_url(self):
          return reverse("artist_detail", kwargs={"pk": self.id})

  class Author(models.Model):
      name = models.CharField(max_length=100)
      slug = models.SlugField()

      class Meta:
          ordering = ["name"]

      def __str__(self):
          return self.name

  class DoesNotExistQuerySet(QuerySet):
      def get(self, *args, **kwargs):
          raise Author.DoesNotExist

  DoesNotExistBookManager = BaseManager.from_queryset(DoesNotExistQuerySet)

  class Book(models.Model):
      name = models.CharField(max_length=255)
      slug = models.SlugField()
      pages = models.IntegerField()
      authors = models.ManyToManyField(Author)
      pubdate = models.DateField()

      objects = models.Manager()
      does_not_exist = DoesNotExistBookManager()

      class Meta:
          ordering = ["-pubdate"]

      def __str__(self):
          return self.name

  class Page(models.Model):
      content = models.TextField()
      template = models.CharField(max_length=255)

  class BookSigning(models.Model):
      event_date = models.DateTimeField()