Question

我在python 2.7中使用sqlite创建了一个数据库，并将数据加载到pandas数据帧中，如下所示。我想要做的是我想将结果打印为“7月最温暖的城市是：伊斯坦布尔，安卡拉，伊兹密尔，布尔萨”。我用Python编写的代码如下：

else {



                    if (e2.getY() - e1.getY() > SWIPE_MIN_DISTANCE
                                && Math.abs(velocityY) > SWIPE_THRESHOLD_VELOCITY) {

                            URL url2 = new URL((thumb[j]));
                            Bitmap bimage = BitmapFactory.decodeStream(url2
                                    .openConnection().getInputStream());
                            shareImage();

                            Toast.makeText(getApplicationContext(),
                                    "Saving to Favorites", Toast.LENGTH_LONG)
                                    .show();



                        }

                    }

                }
            } catch (Exception e) {
                e.printStackTrace();
            }
            return false;
        }

    }



    private void shareImage() {
        Intent share = new Intent(Intent.ACTION_SEND);

        // If you want to share a png image only, you can do:
        // setType("image/png"); OR for jpeg: setType("image/jpeg");
        share.setType("image/*");

        // Make sure you put example png image named myImage.png in your
        // directory
        String bimage = Environment.getExternalStorageDirectory()
                + thumb[j];

        File imageFileToShare = new File(bimage);

        Uri uri = Uri.fromFile(imageFileToShare);
        share.putExtra(Intent.EXTRA_STREAM, uri);

        startActivity(Intent.createChooser(share, "Share Image!"));
    }
}

Answer 1

您可以加入来自df["city"]的元素数组

In [53]: print "The cities warmest in July are: %s" % ', '.join(df["city"].values)
The cities warmest in July are: Istanbul, Ankara, Izmir, Bursa

', '.join(df["city"].values) - 这将返回以逗号分隔的字符串。

此外，您可以使用pd.read_sql()或pd.read_sql_query直接将sql结果读取到数据帧。

In [54]: pd.read_sql("SELECT city FROM weather INNER JOIN cities ON name = city"
   ....:             " WHERE warm_month = 'July'", con)
Out[54]:
       city
0  Istanbul
1    Ankara
2     Izmir
3     Bursa

如何在句子中打印pandas数据帧值

1 个答案: