Python文件（三）：二维数据的表示、存储、处理、csv

f = open("C:\\Users\\520\\Desktop\\cpi.csv", "rt")
ls = []
for line in f:
    line = line.replace("\n", "")
    ls.append(line.split(","))
f.close()
print(ls)

或：
f = open("C:\\Users\\520\\Desktop\\cpi.csv", "rt")
ls = []
for line in f:
    ls.append(line.strip("\n").split(","))
f.close()
print(ls)

输出；
[['指标', '2000年', '2015年', '2020年'], ['全部收入2', '13395.2', '152269.2', '159605'], ['中央收入', '6989.2', '69267.2', '72365.6'], ['地方收入', '6406.1', '83002', '87239.4']]

f = open("C:\\Users\\520\\Desktop\\cpi.csv", "rt")

ls = [['指标2', '2000年', '2015年', '2020年'],\
      ['全部收入2', '13395.2', '152269.2', '159605'],\
      ['中央收入2', '6989.2', '69267.2', '72365.6'],\
      ['地方收入2', '6406.1', '83002', '87239.4']]
f = open("C:\\Users\\520\\Desktop\\cpi2.csv", "w")
for item in ls:
    f.write(",".join(item) + "\n")
f.close()

PS: source, python123