Python 使用csv.writer()创建包含两列的文件(csv)
我是一个完全的初学者,尝试创建包含两列(yPlus和uPlus的值)的文件erg.csv: 而不是:Python 使用csv.writer()创建包含两列的文件(csv),python,csv,Python,Csv,我是一个完全的初学者,尝试创建包含两列(yPlus和uPlus的值)的文件erg.csv: 而不是: 0 \t 0 2.46073 \t 2.4607 4.92146 \t 4.92146 ... def create_file(): f_in = open("folder/experiment.xy","r") f_out = open("erg.csv","w",encoding="utf8") writer = csv.writer(f_out,delimi
0 \t 0
2.46073 \t 2.4607
4.92146 \t 4.92146
...
def create_file():
f_in = open("folder/experiment.xy","r")
f_out = open("erg.csv","w",encoding="utf8")
writer = csv.writer(f_out,delimiter=" ")
while 1:
zeile = f_in.readline()
if len(zeile) == 0:break
expr = r"\s(?P<yPlus>[0-9.]*\n)"
erg = re.search(expr,zeile)
yPlus = erg.group('yPlus')
yPlus = str(yPlus)
if type(erg.group('yPlus')) == str:
if float(yPlus) <= 12:
writer.writerows([yPlus] + [yPlus])
#rowstr = "{0:s}\t{1:s}".format(yPlus,yPlus)
#writer.writerows([yPlus,yPlus])
else:
uPlus = calc_uPlus(float(yPlus))
#uPlus = str(uPlus)
rowstr = "{0:s}\t{1:6.2f}".format(yPlus,uPlus)
writer.writerows(rowstr)
else:
print("Stop! type(erg.group('yPlus') no string.")
f_in.close()
f_out.close()
def calc_uPlus(yP):
uP = ( 2.439 * math.log(yP) + 5.2 )
return(uP)
及
有人能帮忙吗?
非常感谢 如果
yplus
和uplus
分别位于左列和右列,则需要事先将它们组合起来使用writerows
:
import csv
c = csv.writer(open("file.csv", "wb"), delimiter="\t")
yplus = [1, 2]
uplus = [3, 4]
c.writerows(zip(yplus, uplus))
for l, r in zip(yplus, uplus):
c.writerow([l,r])
或者,如果您更愿意使用writerow
而不是writerows
:
import csv
c = csv.writer(open("file.csv", "wb"), delimiter="\t")
yplus = [1, 2]
uplus = [3, 4]
c.writerows(zip(yplus, uplus))
for l, r in zip(yplus, uplus):
c.writerow([l,r])
上述两种方法都将输出:
1\t2
3\t4
1\t2
3\t4