Python中的列头格式

Question

我想有列标题:t1,sigma,P_calc,Vel只在最顶部，而不是在每一步之前。附加当前输出

import csv 
import InvasionC
with open('Data.csv', 'w') as f:
for x in range(0,len(InvasionC.t1)):
#print(Pe.Pe[x])      
print(InvasionC.Isigma)  #for pressure
print(InvasionC.IX)  #for velocity
print(InvasionC.IVelprof)
writer = csv.writer(f)
writer.writerow(['t1', 'sigma', 'P_calc', 'Vel'])
writer.writerows(zip([InvasionC.t1[x]],[InvasionC.Isigma[x]],[InvasionC.IX[x]],[InvasionC.IVelprof[x]]))

当前输出为

输入图片描述

Answer 1

如果第一行是标题，请尝试使用索引获取约束，如下所示

import csv 
import InvasionC
with open('Data.csv', 'w') as f:
for x in range(0,len(InvasionC.t1)):

writer = csv.writer(f)
line = zip([InvasionC.t1[x]],[InvasionC.Isigma[x]],[InvasionC.IX[x]],[InvasionC.IVelprof[x]]) if x else ['t1', 'sigma', 'P_calc', 'Vel']
writer.writerow(line)