Passing dictionary as labels in python - prometheus

[Yamunaindiran]

gdiskc = Gauge("disk_usage_c_drive", "Disk Usage C Drive", disk_usageC.keys())
gdiskd = Gauge("disk_usage_d_drive", "Disk Usage D Drive", disk_usageD.keys())

def set_calc_():
gdiskc.labels(**disk_usageC)
gdiskd.labels(**disk_usageD)

Metrics looks like this:
disk_usage_c_drive{free="61112762368",percent="52.6",total="128849014784",used="67736252416"} 0.0

I need to get rid of the 0.0 in disk_usage_c_drive gauge as my graph is grafana is 0.

I'm trying to write windows exporter in python. please help.