Question

我在csv文件中有以下格式的数据

1）行人; - ; - ; - ; - ; 5.74; 0.018771; 2080.04; 522.40;   0.0000; 0.0000; 0.0000; 0.0000;   2080.04; 522.40; 0.0000; 0.0000; 0.0000; 41.7083; 2080.04; 522.40; 0.0000; 0.0000; 0.0000; 83.4167

2080.04; 522.40; 0.0000; 0.0000; 0.0000; 125.1250; 2080.04; 522.40;   0.0000; 0.0000; 0.0000;   166.8333;

2）行人; - ; - ; - ; - ; 5.74; 0.018771; 2104.25; 528.51; 0.0671;   -0.3212; -0.1091; 178595.0833; 2104.30;

528.53; 0.0566; -0.3056; -0.1113; 178636.7917; 2104.34; 528.56; 0.0466; -0.2926; -0.1125; 178678.5000; 2104.39; 528.58; 0.0375; -0.2613; -0.1128; 178720.2083; 2104.44; 528.61; 0.0299; -0.2221; -0.1116;

78761.9167; 2104.48; 528.63; 0.0235; -0.0841; -0.1063; 178803.625;

此csv文件没有标题，并且每行没有相同的顺序。例如，某些行以分号（;）结尾，但有些行以数字结尾，而某些行以分号开头。我想改变这样的格式：

1; Pedestrian; - ; - ; - ; - ; 5.74; 0.018771; ----------------------------------------------

2; Pedestrian; - ; - ; - ; - ; 5.74; 0.018771;-----------------------------------------------

有没有优雅的解决方案？

Answer 1

这可能会有所帮助。您可以使用csv module来阅读您的文件。

<强>实施例

import csv
s = "PATH_TO.csv"

res = []
with open(s, 'r') as csvfile:
    reader = csv.reader(csvfile, delimiter=';')
    for line in reader:
        if line:
            if ")" in line[0]:
                print "; ".join(line[:7]), "-"*46

<强>输出：

1) Pedestrian;  - ;  - ;  - ;  - ;  5.74;  0.018771; ----------------------------------------------
2) Pedestrian;  - ;  - ;  - ;  - ;  5.74;  0.018771; ----------------------------------------------

如何使用pandas将多个无序行组合成一行[CSV文件]

1 个答案: