  Observations of the microwave sky using the Python telescope in its fifth
season of operation at the Amundsen-Scott South Pole Station in Antarctica are
presented. The system consists of a 0.75 m off-axis telescope instrumented with
a HEMT amplifier-based radiometer having continuum sensitivity from 37-45 GHz
in two frequency bands. With a $0.91^{\circ} \times 1.02^{\circ} $ beam the
instrument fully sampled 598 deg$^2$ of sky, including fields measured during
the previous four seasons of Python observations. Interpreting the observed
fluctuations as anisotropy in the cosmic microwave background, we place
constraints on the angular power spectrum of fluctuations in eight multipole
bands up to $l \sim 260$. The observed spectrum is consistent with both the
COBE experiment and previous Python results. Total-power Wiener-filtered maps
of the CMB are also presented. There is no significant contamination from known
foregrounds. The results show a discernible rise in the angular power spectrum
from large ($l \sim 40$) to small ($l \sim 200$) angular scales.
