import re
l = ['palsar_cprof_1_1_10_0.sdat #1','palsar_0.99_10_1_0.sdat #2','srtm_cprof_10_10_5_0.sdat #3','srtm_10_10_5_0.sdat #4']
rx = re.compile(r'^[^_]*_\d')
l = list(filter(rx.search, l))
print(l)
aW1wb3J0IHJlCmwgPSBbJ3BhbHNhcl9jcHJvZl8xXzFfMTBfMC5zZGF0ICMxJywncGFsc2FyXzAuOTlfMTBfMV8wLnNkYXQgIzInLCdzcnRtX2Nwcm9mXzEwXzEwXzVfMC5zZGF0ICMzJywnc3J0bV8xMF8xMF81XzAuc2RhdCAjNCddCnJ4ID0gcmUuY29tcGlsZShyJ15bXl9dKl9cZCcpCmwgPSBsaXN0KGZpbHRlcihyeC5zZWFyY2gsIGwpKQpwcmludChsKQ==