[英]Print DataFrame as comma separated values
我有一個類似於以下內容的 Pandas DataFrame:
import pandas as pd
city_names = pd.Series(['San Francisco', 'San Jose', 'Sacramento'])
population = pd.Series([852469, 1015785, 485199])
df = pd.DataFrame({'City name': city_names, 'Population': population})
我試圖得到這個輸出:
San Fransisco, 852469
San Jose, 1015785
Sacramento, 485199
>>> s = "\n".join(", ".join(map(str, xs)) for xs in df.itertuples(index=False))
>>> print(s)
San Francisco, 852469
San Jose, 1015785
Sacramento, 485199
我想避免.iterrows()
,因為它往往很緩慢。
'\n'.join(df.astype(str).apply(lambda x: ', '.join(x), axis=1))
'\n'.join([', '.join(elem) for elem in df.astype(str).itertuples(index=False)])
如果我理解你的問題,下面會打印一本字典。
import pandas as pd
city_names = pd.Series(['San Francisco', 'San Jose', 'Sacramento'])
population = pd.Series([852469, 1015785, 485199])
df = pd.DataFrame({ 'City name': city_names, 'Population': population })
the_dict = df.to_dict()
這將打印字典
print(the_dict)
{'City name': {0: 'San Francisco', 1: 'San Jose', 2: 'Sacramento'}, 'Population': {0: 852469, 1: 1015785, 2: 485199}}
說你想要的輸出看起來像逗號分隔的值。
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