You can just use np.savetxt
and access the np attribute .values
:
np.savetxt(r'c:\data\np.txt', df.values, fmt='%d')
yields:
18 55 1 70
18 55 2 67
18 57 2 75
18 58 1 35
19 54 2 70
or to_csv
:
df.to_csv(r'c:\data\pandas.txt', header=None, index=None, sep=' ', mode='a')
Note for np.savetxt
you'd have to pass a filehandle that has been created with append mode.