Return the ephemeris in a nice table 🤩

Pipfile

@@ -8,6 +8,7 @@ pylintfileheader = "*"
 
 [packages]
 skyfield = ">=1.13.0,<2.0.0"
+tabulate = "*"
 
 [requires]
 python_version = "3.7"

Pipfile.lock

@@ -1,7 +1,7 @@
 {
     "_meta": {
         "hash": {
-            "sha256": "87e49f26ac5fcddb454c1ec4233406938f06ba68534ee464a1b1c2398f2d1d26"
+            "sha256": "2567979765f3ac22ecdbf4c6fbaf6e20c75bc83173db4f43d961e7a405804685"
         },
         "pipfile-spec": 6,
         "requires": {
@@ -60,6 +60,13 @@
             ],
             "index": "pypi",
             "version": "==1.13"
+        },
+        "tabulate": {
+            "hashes": [
+                "sha256:d0097023658d4dea848d6ae73af84532d1e86617ac0925d1adf1dd903985dac3"
+            ],
+            "index": "pypi",
+            "version": "==0.8.5"
         }
     },
     "develop": {

README.md

@@ -51,4 +51,23 @@ optional arguments:
 
 By default, the observer will be set at position (0,0) with an altitude of 0.
 You will more likely want to change that.
+```
+
+For instance, if you want the ephemeris of October 31th, 2019 in Paris, France:
+
+```console
+$ python kosmorro.py --latitude 48.8032 --longitude 2.3511 -m 10 -d 31 2019
+Planet     Rise time    Maximum time    Set time
+--------  -----------  --------------  ----------
+SUN          06:35           -           16:32
+MERCURY      08:44         13:01         16:59
+VENUS        08:35         13:01         17:18
+MARS         04:48         10:20         15:51
+JUPITER      10:40         15:01         18:46
+SATURN       12:12         16:20         20:26
+URANUS       16:23           -           06:22
+NEPTUNE      14:53         20:23         01:56
+PLUTO        12:36         17:01         20:50
+
+Moon phase: New Moon
 ```

dumper.py

@@ -0,0 +1,39 @@
+from abc import ABC, abstractmethod
+from tabulate import tabulate
+from skyfield import almanac
+
+
+class Dumper(ABC):
+    def __init__(self, ephemeris):
+        self.ephemeris = ephemeris
+
+    @abstractmethod
+    def to_string(self):
+        pass
+
+
+class TextDumper(Dumper):
+    def to_string(self):
+        s = '\n\n'.join([self.get_planets(self.ephemeris['planets'], self.ephemeris['sun']),
+                         self.get_moon(self.ephemeris['moon'])])
+        return s
+
+    @staticmethod
+    def get_planets(planets, sun):
+        s = [['SUN', sun['rise'].utc_strftime('%H:%M'), '-', sun['set'].utc_strftime('%H:%M')]]
+        for planet in planets:
+            name = planet
+            planet_data = planets[planet]
+            planet_rise = planet_data['rise'].utc_strftime('%H:%M') if planet_data['rise'] is not None else '  -'
+            planet_maximum = planet_data['maximum'].utc_strftime('%H:%M') if planet_data['maximum'] is not None\
+                                                                          else '  -'
+            planet_set = planet_data['set'].utc_strftime('%H:%M') if planet_data['set'] is not None else '  -'
+
+            s.append([name, planet_rise, planet_maximum, planet_set])
+
+        return tabulate(s, headers=['Planet', 'Rise time', 'Maximum time', 'Set time'], tablefmt='simple',
+                        stralign='center', colalign=('left',))
+
+    @staticmethod
+    def get_moon(moon):
+        return 'Moon phase: %s' % almanac.MOON_PHASES[moon['phase']]

ephemeris.py

@@ -39,7 +39,7 @@ class Ephemeris:
         sunrise = t[0] if y[0] else t[1]
         sunset = t[1] if not y[1] else t[0]
 
-        return {'rise': sunrise.utc_iso(), 'set': sunset.utc_iso()}
+        return {'rise': sunrise, 'set': sunset}
 
     def get_moon(self, year, month, day) -> dict:
         time1 = self.timescale.utc(year, month, day - 10)
@@ -138,16 +138,16 @@ class Ephemeris:
             if rise_time is not None and set_time is not None and maximum_time is not None:
                 return {
                     'name': o['planet'],
-                    'rise': rise_time.utc_iso(),
-                    'maximum': maximum_time.utc_iso(),
-                    'set': set_time.utc_iso()
+                    'rise': rise_time,
+                    'maximum': maximum_time,
+                    'set': set_time
                 }
 
         return {
             'name': o['planet'],
-            'rise': rise_time.utc_iso() if rise_time is not None else None,
-            'maximum': maximum_time.utc_iso() if maximum_time is not None else None,
-            'set': set_time.utc_iso() if set_time is not None else None
+            'rise': rise_time if rise_time is not None else None,
+            'maximum': maximum_time if maximum_time is not None else None,
+            'set': set_time if set_time is not None else None
         }
 
     def compute_ephemeris_for_month(self, year: int, month: int) -> list:

kosmorro.py

@@ -18,6 +18,7 @@ import argparse
 import numpy
 from datetime import date
 from ephemeris import Ephemeris
+import dumper
 import json
 
 
@@ -42,7 +43,8 @@ def main():
     ephemeris = Ephemeris(position)
     e = ephemeris.compute_ephemeris(year, month, day)
 
-    print(json.dumps(e, default=json_default, indent=4, separators=(',', ': ')))
+    d = dumper.TextDumper(e)
+    print(d.to_string())
 
 
 def get_args():