class Crew(models.Model):
    crew_id = models.AutoField(primary_key=True)
    crew_code = models.CharField(max_length=200, null=False, unique=True)
    crew_name = models.CharField(max_length=200, null=False)
    crew_password = models.CharField(max_length=200, null=False)

from django.contrib.auth.hashers import make_password
crew_password = 'take the input if you are using form'
form = FormName(commit=False)
form.crew_password=make_password(crew_password)
form.save()

from django.forms import ModelForm, PasswordInput

class CrewForm(ModelForm):
    class Meta:
        model = Crew
        fields = '__all__'
        widgets = {
            'crew_password': PasswordInput(),
        }

form.crew_password=make_password(crew_password)
form.save()

def save(self, *args, **kwargs):
    self.crew_password = make_password(self.crew_password)
    super(Crew, self).save(*args, **kwargs)

password = forms.CharField(
    widget=forms.PasswordInput
)