Python 语法错误 - 按照给定的示例进行操作，无法找出我出错的地方

Question

我目前正在学习使用 python 3.

我正在按照 instructions/walkthroughs 提供的内容进行一些练习。

我在尝试更改列名时开始出现以下错误：

File "<ipython-input-25-591a166ee92a>", line 5
    'human development index (male)':"hdi_m"
                                    ^
SyntaxError: invalid syntax

这是我用过的代码：

gender_development.rename(columns={'gdi rank':"gdi_rank",
                                  'gender development index (gdi)':"gdi"
                                  'human development index (male)':"hdi_m"
                                  'life expectancy at birth (female)':"life_expectancy_f"
                                  'life expectancy at birth (male)':"life_expectancy_m"
                                  'expected years of educaton (female)':"expected_education_years_f"
                                  'expected years of education (male)':"expected_education_years_m"
                                  'mean years of education (female)':"mean_education_years_f"
                                  'mean years of education (male)':"mean_education_years_m"
                                  'estimated gross national income per capita (female)':"gross_income_pc_f"
                                  'estimated gross national income per capita (male)':"gross_income_pc_m"
                                  'human development index (female)':"hdi_f"},
                         inplace=True)

有什么想法吗？

Answer 1

您似乎漏掉了几个逗号，在 python 词典中这些逗号分隔键值对。注意以下代码中多出的逗号：

gender_development.rename(columns={'gdi rank': "gdi_rank",
                               'gender development index (gdi)': "gdi",
                               'human development index (male)': "hdi_m",
                               'life expectancy at birth (female)': "life_expectancy_f",
                               'life expectancy at birth (male)': "life_expectancy_m",
                               'expected years of educaton (female)':"expected_education_years_f",
                               'expected years of education (male)': "expected_education_years_m",
                               'mean years of education (female)':"mean_education_years_f",
                               'mean years of education (male)': "mean_education_years_m",
                               'estimated gross national income per capita (female)':"gross_income_pc_f",
                               'estimated gross national income per capita (male)': "gross_income_pc_m",
                               'human development index (female)':"hdi_f"}, inplace = True)

所有编程语言对此类语法错误都非常敏感。尽量注意使用正确的结构 - 随着时间的推移，这对你来说会变得自然。

Answer 2

另外，试试 linter。 linter 会（可能）抱怨，行长超过 80 个字符，缩进不足，视觉上缺少缩进，: 之后缺少 space，等等

需要清除所有错误（缺失的 gender_development 除外）：

gender_development.rename(columns={
    'gdi rank': "gdi_rank",
    'gender development index (gdi)': "gdi",
    'human development index (male)': "hdi_m",
    'life expectancy at birth (female)': "life_expectancy_f",
    'life expectancy at birth (male)': "life_expectancy_m",
    'expected years of educaton (female)': "expected_education_years_f",
    'expected years of education (male)': "expected_education_years_m",
    'mean years of education (female)': "mean_education_years_f",
    'mean years of education (male)': "mean_education_years_m",
    'estimated gross national income per capita (female)': "gross_income_pc_f",
    'estimated gross national income per capita (male)': "gross_income_pc_m",
    'human development index (female)': "hdi_f"
}, inplace=True)

Python 语法错误 - 按照给定的示例进行操作，无法找出我出错的地方

Python Syntax Error - following the example given and cannot work out where I have gone wrong

python

dictionary

syntax-error

python-3.x