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fix Satellite import from sgp4 version > 2.11 #32

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fix Satellite import from sgp4 version > 2.11 #32

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27 changes: 23 additions & 4 deletions pycraf/satellite/satellite.py
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Original file line number Diff line number Diff line change
Expand Up @@ -44,13 +44,24 @@ def get_sat(tle_string):

try:
import sgp4
from sgp4.earth_gravity import wgs72
from sgp4.io import twoline2rv, Satellite
except ImportError:
raise ImportError(
'The "sgp4" package is necessary to use this function.'
)

try:
from sgp4.io import Satellite
except ImportError:
try:
from sgp4.model import Satellite
except ImportError:
raise ImportError(
"Can't import sgp4 Satellite object."
)

from sgp4.earth_gravity import wgs72
from sgp4.io import twoline2rv

tle_string_list = tle_string.split('\n')
satname = tle_string_list[0]
if satname[0:2] == '0 ': # remove leading 0 if present
Expand Down Expand Up @@ -267,15 +278,23 @@ def azel_from_sat(self, satellite_or_tle, obstime):
assert isinstance(obstime, time.Time), (
'obstime must be an astropy.time.Time object!'
)

try:
import sgp4
from sgp4.io import Satellite
except ImportError:
raise ImportError(
'The "sgp4" package is necessary to use this Class.'
)

try:
from sgp4.io import Satellite
except ImportError:
try:
from sgp4.model import Satellite
except ImportError:
raise ImportError(
"Can't import sgp4 Satellite object."
)

if not isinstance(satellite_or_tle, Satellite):
_, satellite = get_sat(satellite_or_tle)
else:
Expand Down